Question

LCM of 138 by prime factorisation method

Answer 1

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2*3*23 = 138

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Answer 2

Answer:

98 = 2 \times 7 \times 7

84 = 2 \times 2 \times 3 \times 7

138 = 2 \times 3 \times 23

in this the 2 is common number so

LCM is

2 \times 7 \times 7 \times 2 \times 3 \times 7 \times 3 \times

\times 23 = 142002

and HCF is common number that is 2

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