Using the prime factor method, find the L.C.M of 14 ,21 and 98

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Using the prime factor method, find the L.C.M of 14 ,21 and 98

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Answer:

14,21 and 98

By using prime factor method,L.C.M. of 14,21 and 98 are given below

Prime factor of 14=2×7

Prime factor of 21=3×7

Prime factor of 98=2×7×7

∴L.C.M.=2×3×7×7

=294

By using common division method, L.C.M. of 14,21 and 98 are given below

2 14 21 98

3 7 21 49

7 7 7 49

7 1 1 7

1 1 1

∴L.C.M.=2×3×7×7

=294