Aptitude - Square Root and Cube Root - Discussion

Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 4)

Square Root and Cube Root

1.5625 = ?

1.05

1.25

1.45

1.55

Answer: Option

Explanation:

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

1.5625 = 1.25.

Discussion:

62 comments Page 7 of 7.

Abinash said: 2 decades ago

Well I think in the 3rd step it should be something after 22 not 24..yes or no? if 245 then how?

Varun said: 2 decades ago

We can write it as 15625/10000.
5 power of 6 is 15625 and it becomes
5 power of 6/10 power of 4..
125/100=> 1.25

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