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Numerical Ability
LCM and HCF
The least perfect square, which is divisible by each of 21, 36 and 66 is:
A)213444
B)214344
C)214434
D)231444
Read Solution (Total 3)
-
- 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 = 2772*77 = 213444
- 12 years agoHelpfull: Yes(43) No(7)
- Take L.C.M of 21,36,66=462
this would be the multiple of that perfect sqaure
so now sqaure it 462*462=213444 - 12 years agoHelpfull: Yes(11) No(23)
- option A is the anwer....
- 9 years agoHelpfull: Yes(1) No(1)
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