# Aptitude - Numbers

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### Exercise

• General Questions
"Act well your part; there all honor lies."
- Alexander Pope
1.

Which one of the following is not a prime number?

 A. 31 B. 61 C. 71 D. 91

2.

(112 x 54) = ?

 A. 67000 B. 70000 C. 76500 D. 77200

3.

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)

4.

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

5.

1397 x 1397 = ?

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

6.

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

7.

(935421 x 625) = ?

 A. 575648125 B. 584638125 C. 584649125 D. 585628125

8.

The largest 4 digit number exactly divisible by 88 is:

 A. 9944 B. 9768 C. 9988 D. 8888 E. None of these

9.

Which of the following is a prime number ?

 A. 33 B. 81 C. 93 D. 97

10.

What is the unit digit in {(6374)1793 x (625)317 x (341491)}?

 A. 0 B. 2 C. 3 D. 5