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Q.


What is the LCM of 117 and 221?

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a

1989

b

1998

c

1997

d

1992  

answer is A.

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Detailed Solution

We have to find the LCM of 117 and 221.
We find the LCM using prime factorization.
Prime factorization of 117,
3    117 3    39 13 13       1  
Prime factorization of 221,
13 221 17 17       1  
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