Find the HCF and LCM 40,72,120
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Find the HCF and LCM 40,72,120
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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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