Aptitude:: Numbers

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61 

How many of the following numbers are divisible by 132 ? 264, 396, 462, 792, 968, 2178, 5184, 6336

A. 4 B. 5
C. 6 D. 7

62 

1397 x 1397 = ?

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

63 

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    

64 

Which one of the following is not a prime number?

A. 31
B. 61
C 71
D. 91

65 

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)

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