# Home / Arithmetic Aptitude / Numbers :: General Questions

### Arithmetic Aptitude :: Numbers

1.  Which one of the following is not a prime number?
2. A.

31

B.

61

C.
 71
D.

91   3.  (112 x 54) = ?
4. A.

67000

B.
 70000
C.

76500

D.

77200   5.  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?
6.  A. (216 + 1) B. (216 - 1) C. (7 x 223) D. (296 + 1)   7. What least number must be added to 1056, so that the sum is completely divisible by 23 ?

8.  A. 2 B. 3 C. 18 D. 21 E. None of these   9. 1397 x 1397 = ?

10.  A. 1951609 B. 1981709 C. 18362619 D. 2031719 E. None of these   11. How many of the following numbers are divisible by 132 ?
264, 396, 462, 792, 968, 2178, 5184, 6336

12.  A. 4 B. 5 C. 6 D. 7   13.  (935421 x 625) = ?
14. A.

575648125

B.

584638125

C.

584649125

D.
 585628125   15.  The largest 4 digit number exactly divisible by 88 is:
16.  A. 9944 B. 9768 C. 9988 D. 8888 E. None of these   17.  Which of the following is a prime number ?
18. A.

33

B.

81

C.

93

D.
 97   19.  What is the unit digit in {(6374)1793 x (625)317 x (341491)}?
20.  A. 0 B. 2 C. 3 D. 5   