Aptitude - Square Root and Cube Root - Discussion

Lets take a similar example..

Let there are 4 students.
So each member will contribute 4 paise.

i.e., Total amount= 4+4+4+4
=4(1+1+1+1)
=4*4=16.
=4^2
Hence, no.of students= square root of 16(i.e., total sum)which is equal to 4.

Thus we need to do the square root of the total amount.
Similarly relate to the given question.

@M.V. krishna and Raktim............Awesome!! very helpul tips to understand this question

Why we have taken 100 in above problem?

Can any body can explain how to find square root of digit 5929 ?

@Gunjan Rana.

7|59 29 |7
   |49 |
 ---------
   147 |10 29 |7
          |10 29 |
           ---------
           00 00

First of all we should divide the given number into two equal pieces it is 5929 so that 59 and 29 are the two pieces.

Now we have to divide the first part with the squares only.
now 10 is remainder.

After that we have to take the second part of the number that is 29.
now the value is 1029.

Previously we took 7 to divide the first now we should take the double of the 7 that is 14.
if the number can divide with 147*7=1029.
remainder is zero.

If it can able to divide 146 then you should multiply with 6. that is 146*6.

Similarly 145*5.
144*4.
143*3.

The last position should be match.

Another example for you.
1|1 69 |1
   |1 |
 ---------
   23 |0 69 |3
       |0 69 |
         ---------
           00 00

13 is your answer.