The least number which is exactly divisible by 6, 12, 24 is ___.

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Solution

The correct option is A 24
The least number which is exactly divisible by 6, 12, 24 is the LCM of the 3 numbers.

$\begin{matrix} 2 & 6, 12, 24 2 & 3, 6, 12 2 & 3, 3, 6 3 & 3, 3, 3 1, 1, 1 \end{matrix}$

LCM of 6, 12 and 24
$= 2 \times 2 \times 2 \times 3 = 24$

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