Find the $L C M$ of the following numbers by prime factorisation method.
$26, 14$ and $91$ .

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Solution

Prime factors of $26 = 2 \times 13$
Prime factors of $14 = 2 \times 7$
Prime factors of $91 = 13 \times 7$

$L C M = 13 \times 7 \times 2 = 182$

Hence, this is the answer.

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