CSC Company Numerical Ability Number System

What least number must be added to 1056, so that the sum is completely divisible by 23 ?

A. 2 B. 3
C. 18 D. 21
E. None of these

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CSC Other Question


It is being given that (232 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?

A. (216 + 1) B. (216 - 1)
C. (7 x 223) D. (296 + 1)
1397 x 1397 = ?

A. 1951609 B. 1981709
C. 18362619 D. 2031719
E. None of these