Question

what is the least number of trees that can be arranged in rows of 12,15 or 40 in each row?
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Answer 1

LCM [12, 15, 40] = 1×2×2×2×3×5. LCM [12, 15, 40]= 120.

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Answer 2

Answer:

LCM of 12,15,40

12=2*2*3

15=3*5

40=2*2*2*5

LCM = 2*2*2*3*5

=120