Square Roots and Cube Roots mcqs test 01

1. Find the least square number which is exactly divisible by 10, 12, 15 and 18:

2. The least number by which 1470 must be divided to get a number which is a perfect square is:

3. Find the smallest number by which 5808 should be multiplied so that the product becomes à perfect Square:

4. The square root of 64009 is:

5. By what least number 4320 be multiplied to obtain a number which is a perfect cube?

6. Which one t the following numbers has rational square root?

7. What is the smallest number to be subtracted from 549162 in order to make it a perfect square:

8. By what least number 675 be multiplied to obtain a number which is a perfect cube?

9. The digit in the units place in the square root of 15876 is:

10. The square root of (272- 128 ) is:

11. The least perfect square number divisible by 3, 4, 5, 6 and 8 is:

12. Find the smallest number that must be added to 1780 to make it a perfect square:

13. A man plants 15376 apple trees in his garden and arranges them so that there are as many rows as there are apples trees in each in each row. The number of rows is:

14. Find the greatest number of five digits which is a perfect square?

15. What is the square root of 0.16?

16. The largest four digit number which is a perfect cube is:

17. Find the value of /““0.289/0.00121

18. Find the square root of 1471369:

19. The greatest four digit perfect square number is:

20. Find the value of       /““1–9/16 ?

21. Evaluate /6084 by factorization method?

22. /“`50 x /“`98 is equal to:

23. The cube root of .000216 is:

24. The least perfect square, which is divisible by each of 21, 36 and 66 is:

25. The smallest number added to 680621 to make the sum a perfect square is:

26. What is the smallest number by which 3600 be divided to make it a perfect cube?

27. The least number by which 294 must be multiplied to make it perfect square, is:

28. Find the cube root of 2744:

29. The least number of 4 digit which is perfect square, is:

30. What is the square root of 0.0009?