Question

find hcf and lcm of 90, 144 by Prime factorization

Answer 1

90=2*3*3*5
144=2*3*2*2*3*2

H.CF=2*3*3=18

L.C.M=2*3*3*2*2*2*5=720

Answer 2

2 90 144
3. 45. 72
15. 34
the hcf of 90, 144 is 2×3=6
and the lcm is 720