Calculations Worksheet-5

Calculations Worksheet-5

1. The value of (11² + 12² + 13² + 14² + ..... + 20²) is :

(a) 385               (b) 2485             (c) 2870             (d) 3255

2. If 1*548 is divisible by 3, which of the following digits can replace * ?

(a) 0                    (b) 2                    (c) 7                    (d) 5

3. 5*2 is a three–digit number with * as a missing digit. If the number is divisible by 6, the missing digit is :

(a) 2                    (b) 3                    (c) 6                    (d) 7

4. What least value must be assigned to * so that the number 63576*2 is divisible by 8 ?

(a) 1                     (b) 2                    (c) 3                    (d) 4

5. What least value must be given to * so that the number 451*603 is exactly divisible by 9?

(a) 2                    (b) 5                    (c) 7                    (d) 8

6. How many of the following numbers are divisible by 3 but not by 9 ?

2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276

(a) 5                                                 (b) 6

(c) 7                                                 (d) None of these

7. Which one of the following numbers is exactly divisible by 11 ?

(a) 235641         (b) 245642        (c) 315624         (d) 415624

8. What least value must be assigned to * so that the number 86325*6 is divisible by 11 ?

(a) 1                     (b) 2                    (c) 3                    (d) 5

9. A number 476**0 is divisible by both 3 and 11. The non–zero digits in the hundredth and tenth place respectively are :

(a) 7, 4                (b) 7,5                 (c) 8, 5                (d) None of these

10. Which of the following numbers is divisible by 3, 7, 9 and 11 ?

(a) 639               (b) 2079             (c) 3791              (d) 37911

11. The value of P, when 4864 × 9P2 is divisible by 12, is :

(a) 2                    (b) 5                    (c) 8                    (d) None of these

12. Which of the following  numbers is exactly divisible by 24 ?

(a) 35718           (b) 63810          (c) 537804        (d) 3125736

13. If the number 42573* is completely divisible by 72, then which of the following numbers should replace the asterisk ?

(a) 4                    (b) 5                    (c) 6                    (d) 7

14. Which of the following numbers is exactly divisible by 99 ?

(a) 114345         (b) 135792         (c) 913464         (d) 3572404

Answer Key:

(1)-(b); (2)-(a); (3)-(a); (4)-(c); (5)-(d); (6)-(b); (7)-(d); (8)-(c); (9)-(c); (10)-(b); (11)-(d); (12)-(d); (13)-(c); (14)-(a)