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number system aptitude tricks

11 Articles

The pulse rate of a person is 15 beats in 10 seconds. At this rate, what will be pulse rate of the person per minute ?

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Answer : C. 90 beats per minute

The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What must be the remaining number ?

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Answer : B. 60

Which of the following numbers is not divisible by 14 ?

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Answer : C. 1998

By what number should be 86700 divided to make it a perfect square ?

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Answer : A. 3

If Shalu buys 6 more apples, his carton will weight 14.5 kilograms. If the weight of one apple is 250 grams. How many apples did he initially had in his carton ?

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Answer : D. 52

The total number of two-digit positive integer lesser than 100, which are not divisible by 2, 3 and 5 is ?

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Answer : B. 24

A and B are two number when divided by 7 leaves a remainder 3 and 5. What will be the remainder when A-B is divided by 7 ?

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Answer : B. 5

For any two numbers we define an operation $ yielding another number, X $ Y such that following condition holds: X $ X = 0 for all X , X $ (Y $ Z) = X $ Y + Z Find the Value of 2012 $ 0 + 2012 $ 1912 ?

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Answer : A. 2112

What is the remainder when (1234567890123456789)24 is divided by 6561 ?

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Answer : D. 0

A number is divided by 5, 3, 2 successively in order to get remainders of 0, 2, 1 respectively. What will be the remainder when the same number is divided by 2, 3, 5 respectively ?

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Answer : B. 1, 0, 4...

Find the greatest number that will divide 148 246 and 623 leaving remainders 4 6 and 11 respectively ?

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Answer : B. 12...

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