Question
Determine the $L.C.M$ of the numbers given below:
$15, 30, 90$
$15, 30, 90$
✓
Answer
$15, 30, 90$
Prime factorization of $15 = 3 \times 5$
Prime factorization of $30 = 2 \times 3 \times 5$
Prime factorization of $90 = 2 \times 3 \times 3 \times 5$
Therefore, Required $LCM = 2 \times 3 \times 3 \times 5 = 90$
Prime factorization of $15 = 3 \times 5$
Prime factorization of $30 = 2 \times 3 \times 5$
Prime factorization of $90 = 2 \times 3 \times 3 \times 5$
Therefore, Required $LCM = 2 \times 3 \times 3 \times 5 = 90$
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