# Aptitude - Square Root and Cube Root

## Why Aptitude Square Root and Cube Root?

In this section you can learn and practice Aptitude Questions based on "Square Root and Cube Root" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

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## Where can I get Aptitude Square Root and Cube Root Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Aptitude Square Root and Cube Root questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

## How to solve Aptitude Square Root and Cube Root problems?

You can easily solve all kind of Aptitude questions based on Square Root and Cube Root by practicing the objective type exercises given below, also get shortcut methods to solve Aptitude Square Root and Cube Root problems.

### Exercise :: Square Root and Cube Root - General Questions

1.

The cube root of .000216 is:

 A. 0.6 B. 0.06 C. 77 D. 87

Explanation:

 (.000216)1/3 = 216 1/3 106

 = 6 x 6 x 6 1/3 102 x 102 x 102

 = 6 102

 = 6 100

= 0.06

2.

 What should come in place of both x in the equation x = 162 . 128 x

 A. 12 B. 14 C. 144 D. 196

Explanation:

 Let x = 162 128 x

Then x2 = 128 x 162

= 64 x 2 x 18 x 9

= 82 x 62 x 32

= 8 x 6 x 3

= 144. x = 144 = 12.

3.

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

 A. 213444 B. 214344 C. 214434 D. 231444

Explanation:

L.C.M. of 21, 36, 66 = 2772.

Now, 2772 = 2 x 2 x 3 x 3 x 7 x 11

To make it a perfect square, it must be multiplied by 7 x 11.

So, required number = 22 x 32 x 72 x 112 = 213444

4.

1.5625 = ?

 A. 1.05 B. 1.25 C. 1.45 D. 1.55

Explanation:

```   1|1.5625( 1.25
|1
|-------
22| 56
| 44
|-------
245| 1225
| 1225
|-------
|    X
|-------
``` 1.5625 = 1.25.

5.

If 35 + 125 = 17.88, then what will be the value of 80 + 65 ?

 A. 13.41 B. 20.46 C. 21.66 D. 22.35

Explanation:

35 + 125 = 17.88 35 + 25 x 5 = 17.88 35 + 55 = 17.88 85 = 17.88 5 = 2.235 80 + 65 = 16 x 5 + 65

= 45 + 65

= 105 = (10 x 2.235) = 22.35