Aptitude - Square Root and Cube Root - Discussion
Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 3)
3.
The least perfect square, which is divisible by each of 21, 36 and 66 is:
Answer: Option
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
Discussion:
80 comments Page 8 of 8.
Ravinesh kumar said:
10 years ago
I am not satisfy with this solution.
Tamil said:
1 decade ago
How separate 2772 into 2*2*3*3*7*11?
Ravinesh kumar said:
10 years ago
This solution is not satisfactory.
Doov said:
1 decade ago
Why we should multiply 7 with 11?
Bujji said:
1 decade ago
Why should multiplied 7 with 11 ?
Rashmi said:
6 years ago
Please explain the second step.
Raaj said:
1 decade ago
How the answer come like this?
K.viji said:
9 years ago
Why multiplied by 7x11?
Kushi said:
3 years ago
How? Please explain me.
(6)
Tejaswini said:
1 decade ago
How it is possible?
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