Number system -Aptitude Questions and Answers - Interview Questions

Number system -Aptitude Questions and Answers

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 ?

Answer : B. 60

Which of the following numbers is not divisible by 14 ?

Answer : C. 1998

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 ?

Answer : A. 2112

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

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 ?

Answer : B. 1, 0, 4…

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

Answer : B. 12…