Question

Find the HCF and LCM 40,72,120​

Answer 1

Answer:

prime factor of these all numbers

2|40 2|72 2|120

2|20 2|36 2|60

2|10 2|18 2|30

5|5 3|9 3|15

1. 3|3 5|5

1. 1

Prime factor of 40=2×2×2×5

Prime Factor of 72=2×2×2×3×3

Prime factor of 120=2×2×2×3×5

HCF =2×2×2= 8

LCM=2×2×2×3×3×3×5×5= 5400 answer.

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