Question
Find the LCM set of numbers using prime factorisation method.
$30, 40, 60$
$30, 40, 60$
✓
Answer
$ 30,40,60$
$30=3 \times 2 \times 5$
$40=2 \times 2 \times 2 \times 5$
$60=2 \times 3 \times 2 \times 5 $
Product of highest powers of the common factors $=3 \times 2^3 \times 5=120$ $\operatorname{LCM}(30,40,60)=120$
$30=3 \times 2 \times 5$
$40=2 \times 2 \times 2 \times 5$
$60=2 \times 3 \times 2 \times 5 $
Product of highest powers of the common factors $=3 \times 2^3 \times 5=120$ $\operatorname{LCM}(30,40,60)=120$
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