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Finding LCM of Two Numbers

Find the sum ...

Question

Find the sum of digits of the LCM of 4 and 6.

A

12

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B

6

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C

3

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D

24

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Solution

The correct option is C 3
$\begin{matrix} 2 & 4, 6 2 & 2, 3 3 & 1, 3 1, 1 \end{matrix}$

LCM = 2 × 2 × 3
= 12

Sum of the digits of 12 = 1 + 2 = 3

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