Question

LCM of 102,136,170,340 by prime factorisation method.
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Answer 1

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Prime factorization of the given number are :

28=2×2×7 

98=2×7×7 

Here 2 and 7 occurs as a prime factor maximum 2 times 

∴ L.C.M =2×2×7×7=196

Answer 2

Answer:

102=2*51

136=2*2*2*17

170=2*5*17

340=2*2*5*17