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Question

Find the LCM of the following numbers by prime factorisation method.
48, 56 and 72

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Solution

2|48,56,72
_______________
2|24,28,36
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2|12,14,18
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2|6,7,9
_______________
3|3,7,9
_______________
3|1,7,3
_______________
7|1,7,1
_______________
|1,1,1
LCM
=2×2×2×2×3×3×7
=1008.

1195783_700641_ans_b41ab4368e704aeca3a6e143a60346e2.jpg

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