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 7 of 8.
Raviteja said:
1 decade ago
How Separate Into 2 x 2 x 3 x 3 x 7 x 11 The 2772?
Vishal said:
1 decade ago
Because 7 and 11 are don't have common factors.
Ragu said:
1 decade ago
How come the 2772? Please give me explanation.
Janhavi said:
1 decade ago
How come the 2772? Please give me explanation.
Balu said:
1 decade ago
Why should we do 7*7 and 11*11 at last step?
Agila said:
1 decade ago
Guys why we multiply 7 and 11 last step ?
Ram said:
3 weeks ago
Understandable explanations. Thanks all.
Nick said:
9 years ago
How to find out LCM? Someone help me.
Najeeb said:
9 years ago
How to find out least perfect square?
Logapriya said:
9 years ago
Please anyone explain in simple way.
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