Question

Find the HCF and LCM of 144,180and 192

Answer 1

HCF by prime factorization

→ 144= 2 x 2 x 2 x 2 x 3 x 3

→180= 2 x 2 x 3 x 3 x 5

→192=2 x 2 x 2 x 2 x 2 x 2 x 3


» HCF= 2 x 2 x 3=12

» LCM= 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5=8 x 8 x 45= 2880

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