Aptitude - Square Root and Cube Root - Discussion

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

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.

Dulberg said:   1 decade ago
@Shruti.

I think @Dipankar was just trying to give a clue. Personally I find it very useful. It gives you the idea about the figure you should expect.

Priya said:   1 decade ago
We can write 1.5625 as 15625/10000.

So, (125)^2=15625 and (100)^2=10000.

So, by taking square root of this it became 125/100 So the answer is 1.25.


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