Time Left: 600 sec

1. Which of the following is not a perfect cube ? (a) 1 (b) 9 (c) 8 (d) 27

2. The cube of 4 is _______________ . (a) 12 (b) 8 (c) 4 (d) 64

3. The cube of an even number is always ____________ . (a) odd number (b) even number (c) prime number (d) none of these

4. The cube of an odd number is always __________ . (a) odd number (b) even number (c) prime number (d) none of these

5. Each prime factor appears _________ times in its cube? (a) 2 (b) 3 (c) 1 (d) 4

6. By which smallest natural number 392 must be multiplied so as to make the product a perfect cube ? (a) 2 (b) 14 (c) 7 (d) 49

7. The smallest natural number by which 704 must be divided to obtain a perfect cube is (a) 22 (b) 12 (c) 11 (d) 13

8. Which of the following is not a perfect cube ? (a) 216 (b) 343 (c) 125 (d) 108

9. What will be the unit digit of the cube of a number ending with 2 ? (a) 8 (b) 4 (c) 2 (d) 6

10. A cuboid has dimensions 5cm , 2cm, 5cm .How many such cuboid will be needed to form a cube ? (a) 20 (b) 10 (c) 5 (d) 2

11. Which of the following is a perfect cube ? (a) 125 (b) 135 (c) 145 (d) 115

12. What is the volume of a cube whose edge is 2cm ? (a) 8 (b) 6 (c) 10 (d) 4

13. The cube root of 512 is ________ . (a) 8 (b) 32 (c) 16 (d) 2

14. What will be the unit digit of the cube root of a number ends with 8? (a) 2 (b) 8 (c) 4 (d) 6

15. What will be the unit digit of the cube root of a number ends with 2? (a) 2 (b) 8 (c) 4 (d) 6

16. 9 is the cube root of __________ . (a) 343 (b) 729 (c) 629 (d) 81

17. The number of digits in the cube root of a 6-digit number is _______ . (a) 3 (b) 2 (c) 4 (d) 6

18. How many digits will be there in the cube root of 46656 ? (a) 2 (b) 1 (c) 3 (d) 4

19. How many zeros will be there in the cube root of 27000? (a) 3 (b) 0 (c) 1 (d) 2

20. How many zeros will be there in the cube root of 800? (a) 3 (b) 0 (c) 1 (d) cube root does not exist