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The number of diagonals of a polygon of n sides is given by the formula f=n(n-3)/2. If a polygon has twice as many diagonals as sides, how many sides does it have?
The area of a triangle will be when a = 1m, b = 1m, c = 2m, a, b, c being lengths of respective sides?
Find large number from below question The difference of two numbers is 1345. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder
Two stations A and B are 110 km apart on a straight line. One train starts from A at 9 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. At what time will they meet?
In a graduating class, the difference between the highest and lowest salaries is $100,000. The median salary is $50,000 higher than the lowest salary and the average salary is $20,000 higher than the median. What is the minimum number of students W in the class?
A man is 24 years older than his son. In six years, his age will be twice the age of his son. The present age of the son is
There are 20 girls inhostel whose average age is decreased by 2 months, when one girl 18 yrs is replaced by a new boy.Find the age of new girl.
If P = 2Q+1 where P is an Integer then which of the following is true?
Four athletes, Wendy, Michelle, Brenda, and Jamal, scored in a soccer (football) game. If Michelle scored 1 more goal than Brenda did, Jamal scored 3 less than Wendy did, and Wendy scored 3 more than Michelle did, how many fewer goals did Brenda score than Jamal?
Five years ago, John’s age was half of the age he will be in 4 years. How old is he now?
A 300 meter long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?
A train 440 m long is running with a speed of 60 km/hr. In what time will it pass a man who is running at 6 km/hr in the direction opposite to that in which the train is going?
The mean of 50 observations was 36. It was found later that an observation 60 was wrongly taken as 23. The corrected new mean is?
A bag contains 5 red & 3 black balls and the second one 4 red and 5 black balls. One of is selected at random and a draw of two balls is made from it. What is the chances that one of them is red and the other is black?
n a race of 1000 m, A can beat by 100 m, in a race of 800m, B can beat C by 100m. By how many meters will A beat C in a race of 600 m?
The average of fifteen numbers is 0. In those 15, at the most, how many may be greater than zero?
If n is a natural number, then (6n^2+6n) is always divisible by?
Jonathan can type a 40 page document in 40 minutes, Susan can type it in 30 minutes, and Jack can type it in 24 minutes. Working together, how much time will it take them to type the same document?
A license plate in the country Kerrania consists of four digits followed by two letters. The letters A, B, and C are used only by government vehicles while the letters D through Z are used by non-government vehicles. Kerrania's intelligence agency has recently captured a message from the country Gonzalia indicating tha...
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
A batsman scores 26 runs and increases his average from 14 to 15. Find the runs to be made if he wants top increasing the average to 19 in the same match ?
How many different three-digit multiples of 5 can be composed of digits 1, 3, 4, and 5 if none of the digits is repeated?
If n is an integer greater than 6, which of the following must be divisible by 3?
When x is divided by 3, the quotient is y and the remainder is 1. When x is divided by 5, the quotient is z and the remainder is 6. Which of the following is the value of y in terms of z?
By selling 150 mangoes, a fruit-seller gains the selling price of 20 mangoes. Find the gain percent?
What is the lowest possible common multiple of 2 distinct integers, each greater than 63?
How many alphabets need to be there in a language if one were to make 1 million distinct 3 digit initials using the alphabets of the language?
If Finn was 17 months old one year ago, how old was he, in months, x months ago?
What should come in place of the question mark (?) in the following equation? 9568 – 6548 – 1024 = ?
A cyclist bikes x distance at 8 miles per hour and returns over the same path at 812miles per hour. What is the cyclist's average rate for the round trip in miles per hour?
If x = -6 and y = -3, what is the value of 4(x-y)^2 - xy ?
Eleven men and eleven women have to sit around a circular table so that no 2 women are together. In how many ways can that be done?
The average runs scored by a batsman in 30 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?
What is the prime factors’ number of 36?
A rectangular with dimensions 25 inches by 35 inches is to be divided into squares of equal size. Which of the following could be a length of a side of the squares?
A courtyard is 20 meter long and 16 meter board is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is?
A, B, C together started a business. A invested Rs.6000 for 5 months B invested Rs.3600 for 6 months and C Rs.7500 for 3 months. If they get a total profit of Rs.9880. Find the share of B?
How many pieces can a square pizza be cut into by making 4 linear cuts?
The radius of a cylindrical water tank is reduced by 50%. However, the speed by which water is filled into the tank is also decreased by 50%. How much more or less time W will it take to fill the tank now?
What approximate value should come in the place of question mark (?) in the following equation? 1325√(17) + 508.24 of 20% – 85.39 of 3⁄4 = ?
Three numbers are in the ratio 5 : 6 : 7. The sum of its longest and smallest numbers equals the sum of the third number and 48. Find the third number?
A box contains five bulbs out of which 3 are defective. If three bulbs are chosen at random, find the probability that all the four bulbs are defective?
hree seventh of a number is 12 more than 40% of that number. What will be the 60% of that number?
Find the largest number of four digits which is exactly divisible by 25,18,12,15
In expressing a length of 102.472 km as nearly as possible with the three significant digits, find the percentage error
What is the remainder when 1273 * 1275 * 1277 *1285 is divided by 12?
In what time will a train 50 m long cross an electric pole, it its speed be 144 km/hr?
judith is practicing her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, judithis standing on the 4th position from either end of the row. Can you find out how many girls are practicing together?
A man complete a journey in 10 hrs. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr. Find the total journey in km?
For each 6-month period during a light bulb's life span, the odds of it not burning out from over-use are half what they were in the previous 6-month period. If the odds of a light bulb burning out during the first 6-month period following its purchase are 1/3, what are the odds of it burning out during the period from...
A thief steels a car at 6a.m. and drives it at 40kmph. The theft is discovered at 7a.m. and the owner sets off in another car at 60 kmph. When will he overtake the thief?
Two trains 110 meters and 180 meters in length respectively are running in opposite directions, one at the rate of 80 km and the other at the rate of 65 kmph. In what time will they be completely clear of each other from the moment they meet?
Find the invalid no.from the following series 2,3,12,37,86,166,288
50 men took a dip in water tank 40 m long and 20 m broad on a religious day. If the average displacements of water by a man is 4 m3, then the rise in the water level in the tank will be
A shopkeeper sold an article for 1000 after giving 20% discount on the labelled price and made 25% profit on the cost price. What would have been the percentage profit,had he not given the discount’?
David obtained 70, 60, 78, 60 and 65 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?
Of the 19,210 employees of the anvil factory, 2/7 are journeymen. If half of the journeymen were laid off, what percentage of the total remaining employees would be journeymen?
Three friends A, Band C started a business by investing a sum of money in the ratio of 5 : 7 : 6. After 6 months C withdraws half of his capital. If the sum invested by ‘A’ is 40,000, out of a total annual profit of 33,000, C’s share will be
If a particular player is never chosen, in how many ways can 11 cricket players be chosen out of 14 players?
The ratio of Laxmi's age to the age of her mother is 3:11. The difference of their ages is 24 years. The ratio of their ages after 3 years will be?
If the product of two numbers is 82500 and their H.C.F. is 55, find their L.C.M.
4, 5, 7, 11, 19, (...)
If k > 0, x + k = y, and y + 4k = z, what is the ratio between z - x and y - x ?
In an exam, Amar scored 64 percent, Bhavan scored 36 percent and Chetan 44 percent. The maximum score awarded in the exam is 800. Find the average mark scored by all the three boys?
Car A runs at the speed of 52km/hr & reaches its destination in 10hr. Car B runs at the speed of 46 km/h & reaches its destination in 8h. What is the respective ratio of distances covered by Car A & Car B?
An unbiased die is tossed .find the probability of getting a multiple of 3
In a garden, 26 trees are planted at equal distances along a yard 300 metres long, one tree being at each end of the yard. What is the distance between two consecutive trees?
a man and a woman, walking together start out by both taking a step with the left foot. in order to keep together, the man whose stride is longer, takes two steps while the woman takes three. how many steps will the woman have taken they are both about to step out on the right foot for the first time together?
It costs $2 for the first 15 minutes to use the bumper cars at a fair ground. After the first 15 minutes it costs $6 per hour. If a certain customer uses the bumper cars for 3 hours and 25 minutes, how much will it cost him?
Bella is taking a trip in her car from New York (point A) Chicago, Illinois (point B). She is traveling at an average speed of 50 miles per hour, If the total distance from point A to point B is 790 miles, in approximately how long will Bella reach her destination?
The banker's discount on Rs. 1600 at 15% per annum is the same as true discount on Rs. 1680 for the same time and at the same rate. The time is?
A 12 lt solution is 33 1/3% acid. How much water must be added to get the solution having 20 % acid.
A man can row at 5 kmph in still water. If the velocity of current is 3 kmph and it takes him 1 hour to row to a place and come back, how far is the place?
If x > 7, which of the following is equal to (x^2 + 2x + 1)/(x^2 - 1) ?
At Joel’s bookstore, the current inventory is 40% historical fiction. Of the historical fiction books, 40% are new releases, while 20% of the other books are new releases. What fraction of all new releases are the historical fiction new releases?
What is the decimal equivalent of (1/4)^2?
2x + y = 18 |y| <= 18 For how many ordered pairs (x , y) that are solutions of the system above are x and y both integers?
Find the simple interest on $1000 for 3 years at 10% per annum?
For how many values of W, is |||W - 5| -10| -5| = 2? (Those ls are mods)
what is the remainder of (3682*3684*3686) divided by 19?
Linda and Angela contract to paint a neighbor's house. Even though Linda spends 20% more time painting the house than Angela, each receives a payment of m dollars when the work is completed. If Angela decides to pay Linda n dollars so that they would have received the same compensation per hour worked, what is n in ter...
An artist sells paintings through an on-line store, which take a commission of 11% of the price set by the distributor. The distributor obtains the painting from an artist at the price of $20 per item. What is the price that the buyer observers on-line if the distributor wants to maintain a 11% profit on the cost of th...
If a coin is tossed twice, what is the probability that one of the flips was heads and one of the flips was tails?
The average age of a board of 8 functional directors in a company is the same as it was 3 years ago, a younger man having been substituted for one of the directors. How much younger was the new man than the director whose place he took.
What is the remainder when 121212.......(300) digits is divided by 99.
31, 29, 24, 22, 17, ?
A man goes to work daily. Everyday his wife picks him from railway station at 6 o'clock. One day, he left office early and reached the station at 5 o'clock. So, he started walking home. On the way, he met his wife, and they returned together in the car. They reached home ten minutes earlier than usual time. How much ti...
Two tests had the same maximum mark. The pass percentages in the first and the second test were 40% and 45% respectively. A candidate scored 222 marks in the second test and failed by 39 marks in that test. Find the pass mark in the first test?
The speed of a boat in upstream is 50 kmph and the speed of the boat downstream is 60 kmph. Find the speed of the boat in still water and the speed of the stream?
Calculate how many days it will take for 5 boys to paint a 65 m long wall if 2 boys can paint a 40 m long wall in 4 days,
What is the least value of x, So that 2x5478 is divisible by 9
Tom is 12 years older than his sister, Amy. He is also four times her age. How olx is Tom?
In an exam, students need to answer 120 multiple choice questions. If the question paper is divided into 10 sections, how many questions are there in a section?
Sameer spends 40% of his salary on food articles and 1/3rdof the remaining on transport. If he saves Rs.450 per month which is half of the balance after spending on food items and transport, what is his monthly salary?
A house wife saved $2.75 in buying an item on sale. If she spent $20 for the item, approximately how much percent she saved in the transaction?
Alex and Brenda both stand at point X. Alex begins to walk away from Brenda in a straight line at a rate of 10 miles per hour. One hour later, Brenda begins to ride a bicycle in a straight line in the opposite direction at a rate of R miles per hour. If R > 8, which of the following represents the amount of time, in te...
What is theleast number should be added to 1056, so the sum of the number is completely divisible by 23?
if a2+b2=177and ab=54 then find the value of a+b/a-b?
What will come in place of the x in the following Number series? 5,28,57,88,125
At a certain paint store forest green is made by mixing 4 parts blue paint with 3 parts yellow paint.Verdant green is made by mixing 4 parts yellow paint with 3 parts blue paint.How many liters of yellow paint must be added to 21 liters of forest green to change it to Verdant green?