The least common multiple is the number divisble by both and to find that write the factors of 18 and 24
as 18=2x3x3
and 24=2x2x2x3 make pairs in each and out of pairs discard one and take only one value so for 18 take 2x3 and discard3
in 24 there are three 2s so tak 2x2x3 and multiply these two values we get 2x3x2x2x3=72 so 72 is divisible by 18 asn well as 24 and thefe is no other small number than this divisble by 18 and 24
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