(IGP) IAS Pre Paper - 2: GS - Basic Numeracy - Square Root & Cube Root (MCQ - 1)

Basic Numeracy
Square Root & Cube Root (MCQ - 1)

1. Square root of 2025 is
(a) 35
(b) 45
(c) 55
(d) 65

2. Find the square root of 906.01.
(a) 322
(b) 324
(c) 326
(d) 328

3. Find the square root of 906.01.
(a) 30.1
(b) 31.1
(c) 30.11
(d) 31.11

4. Two-fifth of the square of a certain number is 62.5.  What is the number?
(a) 10.5
(b) 12.5
(c) 1.25
(d) 1.05

5. Find the least perfect square number divisible by 2, 3, 4, 5 and 6.
(a) 900
(b) 1600
(c) 2700
(d) 400

6. Find the least number by which 336 be multiplied to make it a perfect square.
(a) 42
(b) 36
(c) 34
(d) 46

7. Find the greatest four-digit perfect square number.
(a) 9801
(b) 9810
(c) 9809
(d) 9890

8. Find the greatest five-digit perfect square number.
(a) 99999
(b) 99856
(c) 99784
(d) 99436

9. Find the least four-digit perfect square number.
(a) 1089
(b) 1024
(c) 1156
(d) 1036

10. Find the least six-digit perfect square number.
(a) 100009
(b) 100289
(c) 100441
(d) 100489

11. Find the cube root of 13824.
(a) 24
(b) 26
(c) 22
(d) 28

12. Find the cube root of 4.096.
(a) 1.6
(b) 16
(c) 0.16
(d) 0.016

13. The largest three digit number which is a perfect cube is
(a) 986
(b) 729
(c) 981
(d) 864

14. What is the smallest number by which 1400 be divided to make it a perfect cube?
(a) 130
(b) 145
(c) 160
(d) 175

15. The cube root of 5.832 is
(a) 0.18
(b) 0.28
(c) 2.8
(d) 1.8

16. Find the least number by which 175760 be multiplied to make it a perfect cube.
(a) 100
(b) 160
(c) 80
(d) 27

17. Find the least number by which 234375 be divided to make it a perfect cube.
(a) 20
(b) 8
(c) 15
(d) 10

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