Question

find the lcm by prime factorisation method of 36,60,72​

Answer 1

Answer:

LCM PRIME FACTORIZATION METHOD

2 | 36 60 72

2 | 18 30 36

2 | 9 15 18

3 | 3 5 6

3 | 1 5 2

2×2×2×2×3×3×5×1=720

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Answer 2

36=2×2×3×3=2

2

×3

2

60=2×2×3×5=2

2

×3×5

72=2×2×2×3×3=2

3

×3

2

∴ LCM of 36,60 and 72=2

3

×3

2

×5

=8×9×5

=72×5

=360

solution