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Aptitude Square Roots and Cube Roots Test Paper 3


11) The number which is not expressible as the square of any natural number is

  1. 1369
  2. 5041
  3. 7056
  4. 9852

Answer: D

Explanation:

We have

1369 = 372,

5041 = 712,

7056 = 842,

9852 = (99.2)2

All of the numbers are perfect square except the option D.


12) What is the smallest number to be subtracted from 549162 in order to make it a perfect square?

  1. 28
  2. 36
  3. 62
  4. 81

Answer: D

Explanation:

Apti Square Roots and Cube Roots

Hence the smallest number to be subtracted is 81 to make the number a perfect square.


13) The smallest number which when multiplied to 3600 yields perfect cube is

  1. 50
  2. 60
  3. 40
  4. 100

Answer: B

Explanation:

Apti Square Roots and Cube Roots

∴ 3600 = 2 × 2 × 2 × 2 × 5 × 5 × 3 × 3

= 23 × 2 × 52 × 32

Apti Square Roots and Cube Roots

∴ 3600 must be multiplied by 60 to make it perfect cube.


14) If 2*3 = √13 and 3*4 = 5, what is the value of 5*12?

  1. Apti Square Roots and Cube Roots
  2. Apti Square Roots and Cube Roots
  3. 12
  4. 13

Answer: D

Explanation:

From the above relation it is clear that
Apti Square Roots and Cube Roots


15) The value of Apti Square Roots and Cube Roots is

  1. 25
  2. 125
  3. 3Apti Square Roots and Cube Roots
  4. None of these.

Answer: B

Explanation:

Apti Square Roots and Cube Roots


Aptitude Square Roots and Cube Roots Test Paper 1
Aptitude Square Roots and Cube Roots Test Paper 2
Aptitude Square Roots and Cube Roots Test Paper 4





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