Find the least number which is exactly divisible by 5, 10, 15, 20, 25.

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300

250

200

150

answer is A.

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Detailed Solution

$\begin{array}{l} L C M o f 5, 10, 15, 20, 25 \\ L C M \Rightarrow \begin{matrix} 5 & 5, & 10, & 15, & 20, & 25 \\ 2 & 1, & 2, & 3, & 4, & 5 \\ 1, & 1, & 3, & 2, & 5 \end{matrix} \\ L C M \Rightarrow 5 \times 2 \times 3 \times 2 \times 5 = 300 \end{array}$

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