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What is the Least Common Multiple of 72, 84 and 108 ?

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What is the Least Common Multiple of 72, 84 and 108 ?
1. 1632
2. 1234
3. 1512
4. 1108
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Correct Answer - Option 3 : 1512

Calculation 

Prime factorisation

72 = 2 × 2 × 2 × 3 × 3 

84 = 2 × 2 × 3 × 7

108 = 2 × 2 × 3 × 3 × 3

LCM of (72, 84 and 108) = 2 × 2 × 2 × 3 × 3 × 3 × 7 = 1512

∴ The LCM of 72, 84, and 108 is 1512

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