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A canoe has two oars, left and right. Each oar either works or breaks. The failure or non-failure of each oar is independent of the failure or non-failure of the other. You can still row the canoe with one oar. The probability that the left oar works is 3/5. The probability that the right oar works is also 3/5. What is the probability J that you can still row the canoe?
The unit digit in the product (115 * 297 * 196 * 108) is:
Two numbers A and B are such that the sum of 5% of A and 2% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B.
Source: Knewton A cyclist's speed varies, depending on the terrain, between 5.0 miles per hour and 14.0 miles per hour, inclusive. What is the maximum distance, in miles, that the cyclist could travel in 7 hours?
In an examination, 35% candidates failed in one subject and 43% failed in another subject while 15% failed in both the subjects. If 2500 candidates appeared at the end of the examination how many passed in either subject but not in both?
A and B starts a business with Rs.8000 each, and after 8 months, B withdraws half of his capital . How should they share the profits at the end of the 18 months?
In a kilometer race, A beats B by 50 meters or 20 seconds. What time does A take to complete the race?
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 650 m long?
Three numbers are in the ratio 3:5:7. The largest number value is 42. Find difference between Smallest & largest number is?
In the xy-coordinate system, line k passes through points (-8m, 0) and (0, 2m). Which of the following is a possible equation of line k?
Find the median and mean of the following test scores: 75, 40, 100, 50, 45, 60, 50, 70, 45, 95 Which score falls in between the two scores?
In a certain pond, 20 fish were caught, tagged, and returned to the pond. A few days later, 20 fish were caught again, of which 2 were found to have been tagged. If the percent of tagged fish in the second catch approximates the percent of tagged fish in the pond, what`s the approximate number of fish in the pond?
A man sells a horse for Rs.800 and loses something, if he had sold it for Rs.980, his gain would have been double the former loss. Find the cost price of the horse?
A, B and C, each working alone can complete a job in 6, 8 and 12 days respectively. If all three of them work together to complete a job and earn $ 4680, what will be A's share of the earnings?
d. What will the number XI represent in the below sequence? 1296, 432, 216, 216, 72, 36, 36, 12, 6, 6, XI
How many terms are there in 2, 4, 8, 16,..., 4096?
If the cost price of 50 articles is equal to the selling price of 35 articles, then the gain or loss percent is?
A and B are two multiples of 14, and Q is the set of consecutive integers between A and B, inclusive. If Q contains 9 multiples of 14, how many multiples of 7 are there in Q?
The length of a rectangle is 3 times its width. If the width of the rectangle is 5 inches, what is the rectangle's area, in square inches?
A speed of 20 metres per second is the same as :
A vase has 2 dozens of assorted flowers of daisies and roses. If the daisies are twice more than the roses. How many roses are in it?
If x^4 + y^4 = 1300, then the greatest possible value of x is between:
simplify : 3x - 5 + 23x - 9
A tea expert claims that he can easily find out whether milk or tea leaves were added first to water just by tasting the cup of tea. In order to check this claims 10 cups of tea are prepared, 5 in one way and 5 in other. Find the different possible ways of presenting these 10 cups to the expert.
A & B started a partnership business. A's investment was thrice the investment of B and the period of his investment was two times the period of investments of B. If B received Rs 7000 as profit , what is their total profit?
A fort of 5000 soldiers has provisions for 125 days. After 25 days some of them left and the food was now enough for the same period of 125 days as before. How many of them left?
A, B and C enter into a partnership. They invest Rs. 90,000, Rs. 80,000 and Rs. 1,20,000 respectively. At the end of the first year, B withdraws Rs. 40,000, while at the end of the second year, C withdraws Rs. 80,000. In what ratio will the profit be shared at the end of 3 years?
A boy has 9 trousers and 12 shirts. In how many different ways can he select a trouser and a shirt?
If a#b = ab – b + b^2, then 2#3 =
A certain company charges $15 per package to ship packages weighing less than 3 pounds each. For a package weighing 3 pounds or more, the company charges an initial fee of $15 plus $3 per pound. If the company charged $60 to ship a certain package, which of the following was the weight of the package, in pounds?
A man’s speed with the current is 19 km/hr and the speed of the current is 2.5 km/hr. the man’s speed against the current is :
10 x 1.8 - 2 x 1.5/0.3 = ?
The least number, which when divided by 8, 15, 20 and 54 leaves in each case a remainder of 8 is:
If p and y are positive integers such that p > y > 1, what is the remainder when 92p × 5p+y + 11y × 6py is divided by 10?
What is the area of a circle with the circumference of 88cms?
In 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 700 m?
If the ratio of apples to bananas is 4 to 3 and the ratio of bananas to cucumbers is 1 to 5, what is the ratio of apples to cucumbers?
A 70 kg metal bar made of alloy of tin and silver lost 7 kg of its weight in the water. 10 kg of tin loses 1.375 kg in the water; 5 kg of silver loses 0.375 kg. What is the ratio of tin to silver in the bar?
The ratio of scores of two football teams is 3 to 4. If each of the team had scores 5 more, what is the ratio of these two new scores ?
The average of 11 results is 42, if the average of first five results is 49 and that of the last seven is 52. Find the fifth result?
There is a 30 % chance of rain and a 70% chance of shine. If it rains there is a 50% chance that Bob will cancel his picnic but if the sun is shining he will definitely have his picnic. What is the chance that Bob will have his picnic?
CP of 3 buffaloes are $30,000. By selling 1 at a loss of 15% and other at a profit of 19%, he foundthat SP of both buffaloes is the same. Find the CP of each?
The present ages of Lewis and Brown are in the ratio 1:2. Three years from now, the ages will be in the ratio 3:5. Find the present age of Lewis.
Today is John's birthday. Three years from today he will be twice as old as he was 14 years ago. How old is John today ?
Two trains of length 100 m and 200 m are 100 m apart. They start moving towards each other on parallel tracks, at speeds 54 kmph and 72 kmph. In how much time will the trains cross each other?
A 16% stock yielding 14% is quoted at:
If 15% of a class averages 100% on a test, 50% of the class averages 78% on the test, and the remainder of the class averages 63% on the test, what is the overall class average? (Round final answer to the nearest percent).
7 carpet-weavers can weave 7 carpets in 7 days. At the same rate, how many carpets would be woven by 14 carpet-weavers in 14 days?
The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?
A train , having a length of 110 meter is running at a speed of 60 kmph. In what time, it will pass a man who is running at 6 kmph in the direction opposite to that of the train
In what time a sum of money double itself at 7% per annum simple interest?
A cycle is bought for Rs.450 and sold for Rs.520, find the gain percent?
Find the ratio in which rice at Rs.7.20 a kg be mixed with rice at Rs.5.60 a kg to produce a mixture worth Rs.6.30 a kg?
If x is 20 percent greater than 88, then x =
A man is 25 years older than his son. In two years, his age will be twice the age of his son. The present age of his son is
There are 300 seniors at Morse High School, and 40% of them have cars. Of the remaining grades (freshmen, sophomores, and juniors), only 10% of them have cars. If 20% of all the students at Morse have cars, how many students are in the three lower grades?
How many questions should I solve the next hour to increase my average to 15 questions, if my average for last 2 hours has been 12 questions per hour.
Two digits in brother's age are the same as the digit in the sister's age, but in reverse order. In twenty nine years brother will be twice as old as sister will be then. what is the difference in their current age ?
In a function they are distributing noble prize. In how many ways can 3 prizes be distributed among 5 boys when a boy gets any no. of prizes?
When positive integer N is divided by positive integer J, the remainder is 28. If N/J = 154.04, what is value of J?
A man recites the alphabet N times. What is the equation for the amount of every odd letter he said?
The ratio of a compound, by weight, consisting only of substances x, y, and z is 4:6:10, respectively. Due to a dramatic increase in the surrounding temperature, the composition of the compound is changed such that the ratio of x to y is halved and the ratio of x to z is tripled. In the changed compound, if the total weight is 116 lbs, how much does substance x weigh?
Albert buys 4 horses and 9 cows for Rs. 13,400. If he sells the horses at 10% profit and the cows at 20% profit, then he earns a total profit of Rs. 1880. The cost of a horse is?
A jar contains a mixture of two liquids Acid( nitric acid) and Base(ammonium chloride) in the ratio 4 : 1. When 10 litres of the mixture is taken out and 10 litres of liquid Base is poured into the jar, the ratio becomes 2 : 3. How many litres of liquid Acid was contained in the jar?
On the Richter scale, which measures the total amount of energy released during an earthquake, a reading of x-1 indicates one-tenth the released energy as is indicated by a reading of x. On that scale, the frequency corresponding to a reading of 5 is how many times as great as the frequency corresponding to a reading of 3?
A train can travel 50% faster than a car. Both start from point A at the same time and reach point B at 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is?
The difference between a two-digit number and the number obtained by interchanging the digit is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1:2?
Among 260 viewers interviewed who watch at least one of the three TV channels namely A, BC. 116 watch A, 127 watch C, while 107 watch B. If 50 watch exactly two channels. How many watch exactly one channel?
The probability that a computer company will get a computer hardware contract is 4/5 and the probability that it will not get a software contract is 3/5. If the probability of getting at least one contract is 9/10, what is the probability that it will get both the contracts?
Out of 5 consonants and 3 vowels, how many words of 4 consonants and 2 vowels can be formed?
A machine puts c caps on bottles in m seconds. How many hours will it take to put caps on b bottles?
A certain meter records voltage between 0 and 10 volts inclusive. If the average value of 3 recordings on the meter was 4 volts, what was the smallest possible recording in volts?
On June 1 a bicycle dealer noted that the number of bicycles in stock had decreased by 2 for each of the past 5 months. If the stock continues to decrease at the same rate for the rest of the year, how many fewer bicycles will be in stock on September 1 than were in stock on January 1?
By selling 150 mangoes, a fruit-seller gains the selling price of 30 mangoes. Find the gain percent?
Define q* by the equation q* = π-q. Then ((−π)*)* =
Find out the two signs to be interchanged for making following equation correct 5 + 3 x 8 - 12 / 4 =3
Wife man got salary Rs.1000 and Husband got 30% extra compare with A's salary.If boths salary are joined, when will the salary become 10,350?
In a hockey championship, there are 153 matches played. Every two team played one match with each other. The number of teams participating in the championship is:
A train 300 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
A grocery shop has a sale of Rs. 6335, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
Set S has a mean of 10 and a standard deviation of 1.5. We are going to add two additional numbers to Set S. Which pair of numbers would decrease the standard deviation the most?
Find the odd man out 253, 136, 352, 324, 631, 244
This topic is locked. If you want to discuss this question please re-post it in the respective forum. Matt and Peter can do together a piece of work in 20 days. After they have worked together for 12 days Matt stops and Peter completes the remaining work in 12 days. In how many days Peter complete the work separately.
The number of new words that can be formed by rearranging the letters of the word 'LETTERRS' is?
What is the difference between the largest number and the least number written with the digits 9, 3, 1, 2?
What value will come in place of question mark in the following equation? ? + 0.025 = 80
Two trains 140 m and 190 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?
Joe invested a certain sum of money in a simple interest bond whose value grew to $560 at the end of 3 years and to $660 at the end of another 5 years. What was the rate of interest in which he invested his sum?
Which of the following fractions can be written as the difference of reciprocals of two consecutive integers
In an election a candidate who gets 60% of the votes is elected by a majority of 1504 votes. What is the total number of votes polled?
Aravind had $ 2100 left after spending 30 % of the money he took for shopping. How much money did he take along with him?
Of 60 applicants for a job, 28 had at least 4 years' experience, 36 had degrees, and 6 had less than 4 years' experience and did not have a degree.How many of the applicants had at least 4 years' experience and a degree?
In what time will a railway train 40 m long moving at the rate of 36 kmph pass a telegraph post on its way?
When the integer j is divided by 12, the remainder is 3. Which of the following, when divided by 12, will have a remainder of 6 ? I. 2j II. 6j III. 4j + 6
If the price of a computer were reduced by 15 percent, which of the following could not be the final price of the computer? (Assume initial price to be integer in cents)
The distance from City A to City B is 120 miles. While driving from City A to City B, Cara drives at a constant speed of 30 miles per hour. Dan leaves City A 120 minutes after Cara. What is the minimum constant speed in miles per hour that Dan must exceed in order to arrive in City B before Cara?
A milkman purchases the milk at Rs. x per litre and sells it at Rs. 2x per litre still he mixes 2 litres water with every 6 litres of pure milk. What is the profit percentage?
Two cyclist start from the same places in opposite directions. One is going towards north at 10kmph and the other is going towards south 10kmph. What time will they take to be 50km apart?
A train travels 240 km in 3 hours and 450 km in 5 hours.find the average speed of train.
A 270 metres long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80 kmph in 9 seconds. What is the length of the other train?