Question

Find the L.c.m and H.C.F of 72,126 and 168 by using primefactorization

Answer 1

Answer:

72 =2×2×2×3×3

126=2×3×3×7

168=2×2×2×3×7

2×2×2×3×3×7

common factors in all the three numbers are 2×3

so hcf will be 6

and lcm will be height number of factor in each group

i.e 2×2×2×3×3×7

=168×3

=504