gmat_questions.json

{
  "items": [
    {
      "id": "EQUANT01",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If x is an integer and 3x+2 is divisible by 5, which value could x be?",
      "answers": ["1","2","3","4","6"],
      "correctIndex": 3
    },
    {
      "id": "EQUANT02",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "A price is increased by 20% and then decreased by 20%. The final price is what percent of the original?",
      "answers": ["96%","100%","104%","108%","120%"],
      "correctIndex": 0
    },
    {
      "id": "EQUANT03",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If a and b are positive and a/b = 3/4, what is (a+b)/b?",
      "answers": ["1.25","1.5","1.75","2","2.5"],
      "correctIndex": 2
    },
    {
      "id": "EQUANT04",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If 5y - 3 = 22, what is y?",
      "answers": ["3","4","5","6","7"],
      "correctIndex": 2
    },
    {
      "id": "EQUANT05",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "A box contains 3 red and 5 blue balls. If one ball is chosen at random, what is the probability it is red?",
      "answers": ["3/5","3/8","5/8","1/3","1/5"],
      "correctIndex": 1
    },
    {
      "id": "EQUANT06",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If (x/3) = 5, what is 2x?",
      "answers": ["10","15","20","25","30"],
      "correctIndex": 2
    },
    {
      "id": "EQUANT07",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "The sum of two consecutive integers is 41. What is the larger integer?",
      "answers": ["19","20","21","22","23"],
      "correctIndex": 2
    },
    {
      "id": "EQUANT08",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If a rectangle has perimeter 30 and length 9, what is its width?",
      "answers": ["3","4","5","6","7"],
      "correctIndex": 1
    },
    {
      "id": "EQUANT09",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "What is the smallest prime factor of 91?",
      "answers": ["7","11","13","17","19"],
      "correctIndex": 0
    },
    {
      "id": "EQUANT10",
      "category": "Quantitative",
      "gmatDifficulty": 450,
      "questionText": "If 0.06 = 6/k, what is k?",
      "answers": ["10","50","60","100","600"],
      "correctIndex": 3
    },

    {
      "id": "EVERBAL01",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "The committee based its decision not only on cost but also ___ the long term impact.",
      "answers": ["consider","considered","considering","to consider","on considering"],
      "correctIndex": 4
    },
    {
      "id": "EVERBAL02",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Which sentence is grammatically correct?",
      "answers": [
        "Neither the managers nor the director were informed.",
        "Neither the managers nor the director was informed.",
        "Neither the manager nor the directors was informed.",
        "Neither the managers or the director was informed.",
        "Neither manager nor director were informed."
      ],
      "correctIndex": 1
    },
    {
      "id": "EVERBAL03",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "In the passage, the study is mentioned primarily to:",
      "answers": ["refute the author’s main claim","introduce a new topic unrelated to the argument","illustrate a broader trend","dismiss earlier research entirely","prove causation beyond doubt"],
      "correctIndex": 2
    },
    {
      "id": "EVERBAL04",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Choose the word closest in meaning to 'mitigate'.",
      "answers": ["worsen","reduce","predict","separate","repeat"],
      "correctIndex": 1
    },
    {
      "id": "EVERBAL05",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Which sentence is most concise?",
      "answers": [
        "Due to the fact that the roads were icy, the match was canceled.",
        "Because the roads were icy, the match was canceled.",
        "The match was canceled due to the icy roads that existed.",
        "The match was canceled as a result of roads being icy.",
        "Icy roads were the reason that the match was canceled."
      ],
      "correctIndex": 1
    },
    {
      "id": "EVERBAL06",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Choose the correct verb form: Each of the reports ___ complete.",
      "answers": ["are","were","has","is","have"],
      "correctIndex": 3
    },
    {
      "id": "EVERBAL07",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Choose the best transition: The hypothesis seemed plausible; ___, it lacked supporting data.",
      "answers": ["therefore","however","for example","similarly","in addition"],
      "correctIndex": 1
    },
    {
      "id": "EVERBAL08",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Which choice best fixes the modifier error? 'Walking to the station, the rain soaked Maria.'",
      "answers": [
        "Walking to the station, the rain soaked Maria.",
        "Walking to the station, Maria was soaked by the rain.",
        "Walking to the station, soaking Maria was the rain.",
        "Walking to the station, the station soaked Maria with rain.",
        "Walking to the station, Maria soaked the rain."
      ],
      "correctIndex": 1
    },
    {
      "id": "EVERBAL09",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Choose the correctly spelled word.",
      "answers": ["definately","seperate","receive","enviroment","occassion"],
      "correctIndex": 2
    },
    {
      "id": "EVERBAL10",
      "category": "Verbal",
      "gmatDifficulty": 450,
      "questionText": "Which option is a complete sentence?",
      "answers": ["Because the deadline was moved.","Although working late.","The deadline was moved.","While in the office.","After the meeting."],
      "correctIndex": 2
    },

    {
      "id": "EDATA01",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "Revenue increased from 80000 to 92000. What was the percent increase?",
      "answers": ["10%","12%","15%","18%","20%"],
      "correctIndex": 2
    },
    {
      "id": "EDATA02",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "Which dataset has the greatest variability?",
      "answers": ["10,12,14","8,12,16","11,12,13","9,12,15","10,11,12"],
      "correctIndex": 1
    },
    {
      "id": "EDATA03",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "If the median is greater than the mean, the distribution is most likely:",
      "answers": ["symmetric","uniform","skewed right","skewed left","bimodal"],
      "correctIndex": 3
    },
    {
      "id": "EDATA04",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "A table shows values 6, 9, 15, 20. What is the mean?",
      "answers": ["10","11.5","12.5","13","14"],
      "correctIndex": 1
    },
    {
      "id": "EDATA05",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "If 18 out of 60 customers choose Option A, what percent choose A?",
      "answers": ["20%","25%","30%","35%","40%"],
      "correctIndex": 2
    },
    {
      "id": "EDATA06",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "Costs are 150 and revenue is 210. Profit is:",
      "answers": ["40","50","60","70","80"],
      "correctIndex": 2
    },
    {
      "id": "EDATA07",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "A pie chart shows 25% for Segment X. This equals:",
      "answers": ["1/2","1/3","1/4","2/5","3/4"],
      "correctIndex": 2
    },
    {
      "id": "EDATA08",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "Which measure represents the middle value of an ordered dataset?",
      "answers": ["mean","median","mode","range","variance"],
      "correctIndex": 1
    },
    {
      "id": "EDATA09",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "If a value is far above most others, it is best described as a(n):",
      "answers": ["cluster","outlier","median","trend","index"],
      "correctIndex": 1
    },
    {
      "id": "EDATA10",
      "category": "DataInsight",
      "gmatDifficulty": 450,
      "questionText": "If sales are 30 on Monday and 45 on Tuesday, Tuesday sales are higher by:",
      "answers": ["10","12","15","18","20"],
      "correctIndex": 2
    },

    {
      "id": "MQUANT01",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If x and y are positive integers and x/y = 4/7 and x+y = 66, what is x?",
      "answers": ["24","28","32","36","40"],
      "correctIndex": 1
    },
    {
      "id": "MQUANT02",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "Pipe A fills a tank in 6 hours and Pipe B in 12 hours. After 2 hours together, what fraction remains unfilled?",
      "answers": ["1/6","1/4","1/3","5/12","1/2"],
      "correctIndex": 2
    },
    {
      "id": "MQUANT03",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If 2a - 3b = 7 and a = 5, what is b?",
      "answers": ["-1","0","1","2","3"],
      "correctIndex": 3
    },
    {
      "id": "MQUANT04",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If n is an integer, which value of n makes (n^2 + 5n + 6) divisible by 6?",
      "answers": ["-5","-3","-2","1","4"],
      "correctIndex": 3
    },
    {
      "id": "MQUANT05",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "A number is increased by 15% and then increased again by 20%. The final value is what percent of the original?",
      "answers": ["135%","136%","138%","140%","142%"],
      "correctIndex": 2
    },
    {
      "id": "MQUANT06",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If the average of 5 numbers is 12 and four of the numbers are 9, 10, 11, and 14, what is the fifth number?",
      "answers": ["12","14","16","18","20"],
      "correctIndex": 1
    },
    {
      "id": "MQUANT07",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If a circle has circumference 18π, what is its area?",
      "answers": ["36π","72π","81π","162π","324π"],
      "correctIndex": 2
    },
    {
      "id": "MQUANT08",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "A store sells pens at 3 for 5. If you buy 12 pens, what is the total cost?",
      "answers": ["15","18","20","22","25"],
      "correctIndex": 2
    },
    {
      "id": "MQUANT09",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If x^2 - 9 = 0 and x is positive, what is x?",
      "answers": ["1","2","3","6","9"],
      "correctIndex": 2
    },
    {
      "id": "MQUANT10",
      "category": "Quantitative",
      "gmatDifficulty": 600,
      "questionText": "If the ratio of apples to oranges is 5:3 and there are 64 fruits total, how many apples are there?",
      "answers": ["35","40","45","50","55"],
      "correctIndex": 1
    },

    {
      "id": "MVERBAL01",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "The scientist’s theory, once dismissed as implausible, is now regarded as ___ recent evidence.",
      "answers": ["validated by","validation of","validating","to validate","having validated"],
      "correctIndex": 0
    },
    {
      "id": "MVERBAL02",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Which option best combines the sentences: 'The company expanded rapidly.' 'It underestimated logistical challenges.'",
      "answers": [
        "The company expanded rapidly but underestimated the logistical challenges.",
        "The company expanded rapidly, it underestimated the logistical challenges.",
        "Expanding rapidly, logistical challenges were underestimated.",
        "The company expanded rapidly; underestimated logistical challenges.",
        "Rapid expansion underestimated logistical challenges."
      ],
      "correctIndex": 0
    },
    {
      "id": "MVERBAL03",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "The author’s discussion of early failures primarily serves to:",
      "answers": ["undermine later successes","show that progress is inevitable","illustrate the complexity of the process","argue that results do not matter","criticize modern views"],
      "correctIndex": 2
    },
    {
      "id": "MVERBAL04",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Choose the best word: The report was praised for its ___ analysis.",
      "answers": ["thorough","thoroughly","thoroughness","thoroughest","thoroughen"],
      "correctIndex": 0
    },
    {
      "id": "MVERBAL05",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Which sentence has correct subject verb agreement?",
      "answers": [
        "A list of items are on the desk.",
        "A list of items is on the desk.",
        "A list of items were on the desk.",
        "A list of item is on the desk.",
        "A list of items have on the desk."
      ],
      "correctIndex": 1
    },
    {
      "id": "MVERBAL06",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Choose the best revision: 'The policy is effective, it reduces costs.'",
      "answers": [
        "The policy is effective, and it reduces costs.",
        "The policy is effective it reduces costs.",
        "The policy is effective; reducing costs.",
        "The policy is effective, reducing costs.",
        "The policy is effective, which reducing costs."
      ],
      "correctIndex": 0
    },
    {
      "id": "MVERBAL07",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Choose the word closest in meaning to 'equivocal'.",
      "answers": ["certain","ambiguous","complete","brief","obvious"],
      "correctIndex": 1
    },
    {
      "id": "MVERBAL08",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Which sentence avoids redundancy best?",
      "answers": ["Advance planning is necessary.","Unexpected surprise occurred.","Final outcome was unclear.","Free gift was offered.","Past history matters."],
      "correctIndex": 0
    },
    {
      "id": "MVERBAL09",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "In the argument, the author assumes that:",
      "answers": ["all variables are known","past patterns will continue","no alternatives exist","correlation proves causation","costs always exceed benefits"],
      "correctIndex": 1
    },
    {
      "id": "MVERBAL10",
      "category": "Verbal",
      "gmatDifficulty": 600,
      "questionText": "Choose the correct idiom.",
      "answers": ["capable to","different than","responsible for","regard on","concerned at"],
      "correctIndex": 2
    },

    {
      "id": "MDATA01",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "Sales increase from 200 to 260. What is the percent increase?",
      "answers": ["20%","25%","30%","35%","40%"],
      "correctIndex": 2
    },
    {
      "id": "MDATA02",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "What is the weighted average of 60 with weight 2 and 80 with weight 3?",
      "answers": ["68","70","72","74","76"],
      "correctIndex": 2
    },
    {
      "id": "MDATA03",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "If the mean of five numbers is 20, what is their sum?",
      "answers": ["80","90","100","110","120"],
      "correctIndex": 2
    },
    {
      "id": "MDATA04",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "Quarterly profits are 40, 60, 50, 70. Which statement is true?",
      "answers": ["Mean exceeds median","Median exceeds mean","Mean equals median","Range is 20","No variability"],
      "correctIndex": 1
    },
    {
      "id": "MDATA05",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "If price rises 25% and demand falls 10%, revenue will most likely:",
      "answers": ["increase significantly","decrease significantly","increase slightly","stay about the same","become zero"],
      "correctIndex": 2
    },
    {
      "id": "MDATA06",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "Which measure is least affected by outliers?",
      "answers": ["mean","median","range","maximum","minimum"],
      "correctIndex": 1
    },
    {
      "id": "MDATA07",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "A dataset is skewed right if most values are:",
      "answers": ["high","low","evenly spread","negative","identical"],
      "correctIndex": 1
    },
    {
      "id": "MDATA08",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "If 3 out of 8 customers return a product, what percent is that?",
      "answers": ["30%","35%","37.5%","40%","45%"],
      "correctIndex": 2
    },
    {
      "id": "MDATA09",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "If revenue is 500 and costs are 350, profit margin is:",
      "answers": ["20%","25%","30%","35%","40%"],
      "correctIndex": 1
    },
    {
      "id": "MDATA10",
      "category": "DataInsight",
      "gmatDifficulty": 600,
      "questionText": "Which display is best for checking correlation between two variables?",
      "answers": ["pie chart","bar chart","histogram","scatter plot","stacked area chart"],
      "correctIndex": 3
    },

    {
      "id": "HQUANT01",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If x + 1/x = 3, what is x^3 + 1/x^3?",
      "answers": ["9","18","21","24","27"],
      "correctIndex": 2
    },
    {
      "id": "HQUANT02",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "A positive integer n leaves remainder 1 when divided by 2 and remainder 2 when divided by 3. What could be the remainder when n is divided by 6?",
      "answers": ["0","1","2","3","5"],
      "correctIndex": 4
    },
    {
      "id": "HQUANT03",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "In a geometric sequence, each term is (2/3) times the previous term. If the 4th term is 16, what is the 1st term?",
      "answers": ["18","24","36","54","72"],
      "correctIndex": 3
    },
    {
      "id": "HQUANT04",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If (x-2)(x-5)=0, and x is an integer greater than 3, what is x?",
      "answers": ["2","3","4","5","6"],
      "correctIndex": 3
    },
    {
      "id": "HQUANT05",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "How many integers satisfy |x-5| ≤ 7?",
      "answers": ["12","13","14","15","16"],
      "correctIndex": 3
    },
    {
      "id": "HQUANT06",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If a^b = a^3 and a>0 and a≠1, what must be true?",
      "answers": ["b=0","b=1","b=3","a=3","a=b"],
      "correctIndex": 2
    },
    {
      "id": "HQUANT07",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "What is the remainder when 3^100 is divided by 4?",
      "answers": ["0","1","2","3","4"],
      "correctIndex": 1
    },
    {
      "id": "HQUANT08",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If a triangle has sides 7 and 10 and included angle 60 degrees, what is the length of the third side?",
      "answers": ["3","7","9","13","17"],
      "correctIndex": 2
    },
    {
      "id": "HQUANT09",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If f(x)=x^2-4x+k has exactly one real root, what is k?",
      "answers": ["0","2","4","8","16"],
      "correctIndex": 2
    },
    {
      "id": "HQUANT10",
      "category": "Quantitative",
      "gmatDifficulty": 750,
      "questionText": "If the area of a circle is 49π, what is its circumference?",
      "answers": ["7π","14π","21π","28π","49π"],
      "correctIndex": 1
    },

    {
      "id": "HVERBAL01",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Although the proposal appears straightforward, it depends on assumptions that are far from ___.",
      "answers": ["tenuous","explicit","unassailable","redundant","peripheral"],
      "correctIndex": 2
    },
    {
      "id": "HVERBAL02",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Which sentence is grammatically correct and logically clear?",
      "answers": [
        "Having reviewed the data, the conclusions were revised by the analysts.",
        "Having reviewed the data, the analysts revised the conclusions.",
        "The analysts, having reviewed the data, the conclusions were revised.",
        "The data having been reviewed, revising the conclusions was done by the analysts.",
        "Reviewing the data, the conclusions revised the analysts."
      ],
      "correctIndex": 1
    },
    {
      "id": "HVERBAL03",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "The argument is most vulnerable because it:",
      "answers": [
        "assumes what it sets out to prove",
        "uses a sample too small to justify any conclusion",
        "assumes one factor cannot influence another",
        "confuses a necessary condition with a sufficient one",
        "draws a conclusion that contradicts its evidence"
      ],
      "correctIndex": 3
    },
    {
      "id": "HVERBAL04",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Choose the best word: The results were not definitive but merely ___.",
      "answers": ["conclusive","tentative","certain","mandatory","literal"],
      "correctIndex": 1
    },
    {
      "id": "HVERBAL05",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Which option has correct parallel structure?",
      "answers": [
        "She values integrity, working hard, and to be punctual.",
        "She values integrity, hard work, and punctuality.",
        "She values to be honest, working hard, and punctual.",
        "She values integrity, to work hard, and punctual.",
        "She values being honest, to work hard, and being punctual."
      ],
      "correctIndex": 1
    },
    {
      "id": "HVERBAL06",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Which option contains an idiom error?",
      "answers": ["regard as","responsible for","different from","capable of","capable to"],
      "correctIndex": 4
    },
    {
      "id": "HVERBAL07",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Choose the most precise word.",
      "answers": ["thing","stuff","aspect","kind","lot"],
      "correctIndex": 2
    },
    {
      "id": "HVERBAL08",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "The passage’s primary purpose is to:",
      "answers": ["present a single example without analysis","compare two competing explanations","argue that all research is flawed","describe a personal narrative","list unrelated facts"],
      "correctIndex": 1
    },
    {
      "id": "HVERBAL09",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "The author implies that a policy change would be effective only if it:",
      "answers": ["is inexpensive","is widely publicized","addresses the underlying incentive","is implemented gradually","is approved unanimously"],
      "correctIndex": 2
    },
    {
      "id": "HVERBAL10",
      "category": "Verbal",
      "gmatDifficulty": 750,
      "questionText": "Choose the best completion: The theory was dismissed as ___ due to limited evidence.",
      "answers": ["speculative","speculation","speculate","speculating","speculated"],
      "correctIndex": 0
    },

    {
      "id": "HDATA01",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "Option A returns +10% then -10%. Option B returns -5% then +5%. Starting at 100, which ends higher?",
      "answers": ["Both end at 100","A ends higher","B ends higher","A and B end equal below 100","Cannot be determined"],
      "correctIndex": 2
    },
    {
      "id": "HDATA02",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "Average weekly sales rise from 400 to 460 while stores rise from 8 to 10. Best supported conclusion?",
      "answers": ["Sales per store increased","Sales per store decreased","Sales per store stayed the same","Campaign caused higher sales per store","No comparison can be made"],
      "correctIndex": 1
    },
    {
      "id": "HDATA03",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "A dataset has mean 50 and standard deviation 5 and is approximately normal. Which value is most likely?",
      "answers": ["35","40","45","60","70"],
      "correctIndex": 2
    },
    {
      "id": "HDATA04",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "Compound interest at 10% annually on 100 for 2 years yields:",
      "answers": ["110","115","120","121","125"],
      "correctIndex": 3
    },
    {
      "id": "HDATA05",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "A regression model has R^2 = 0.81. This means:",
      "answers": ["81% of outcomes are predicted perfectly","81% of variance is explained","19% of variance is explained","the model is invalid","variables are independent"],
      "correctIndex": 1
    },
    {
      "id": "HDATA06",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "If revenue grows 20% and costs grow 30%, profit will most likely:",
      "answers": ["increase","decrease","stay the same","double","become zero"],
      "correctIndex": 1
    },
    {
      "id": "HDATA07",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "Which chart best displays the relationship between two quantitative variables?",
      "answers": ["bar chart","pie chart","histogram","scatter plot","stacked bar chart"],
      "correctIndex": 3
    },
    {
      "id": "HDATA08",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "If the median is greater than the mean, the distribution is:",
      "answers": ["symmetric","uniform","skewed right","skewed left","normal"],
      "correctIndex": 3
    },
    {
      "id": "HDATA09",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "Which metric best allows comparison across different scales?",
      "answers": ["raw total","median","percentage change","maximum","frequency"],
      "correctIndex": 2
    },
    {
      "id": "HDATA10",
      "category": "DataInsight",
      "gmatDifficulty": 750,
      "questionText": "A statistically significant result best supports which conclusion?",
      "answers": ["Causation is proven","Results occurred by chance","There is evidence against the null hypothesis","The sample is biased","The model is perfect"],
      "correctIndex": 2
    }
  ]
}