Quantitative-aptitude Questions Set 57:
If a = x + 1/x and b = x - 1/x, find the value of a^4 + b^4 - 2(a^2)(b^2).
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. If 40 men can make 30 boxes in 20 days, How many more men are needed to make 60 boxes in 25 days?
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Mudit's age 18 years hence will be thrice his age four years ago. Find Mudit's present age?
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Your boss asks you for a word that he/she can use in place of “change”. Which of the following would you give?
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P and Q can complete a job in 12 days working together. If P alone can complete it in 20 days, how many days can Q alone complete the job?
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A mixture with 30% sugar and the rest salt is to be converted to a mixture with 10% sugar. How much salt should be added to 100 kg of the 30% sugar mixture?
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In an arithmetic progression (AP), if the 10th term is 21 and the common difference is 2, then find the series.
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Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:
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Rajan got married 8 years ago. His present age is 6/5 times his age at the time of his marriage. Rajan's sister was 10 years younger to him at the time of his marriage. What is the age of Rajan's sister?
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A boy purchases pens of different colors for his three friends. The pens are put into a box, and his friends are asked to pick one. What is the probability that none of the three friends choose their own pen?
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