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Finding LCM of Two Numbers

What is the s...

Question

What is the smallest number of chairs that can be arranged in rows of 12 or 15?

A

30

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B

120

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C

40

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D

60

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Solution

The correct option is D 60
If chairs are arranged in 1

Rows of 12 Rows of 15

12 :- 12, 24, 36, 48

15 :- 15, 30, 45,

$∴$ The least number of chairs required to arrange in rows of 12 and 15 is 60 their LCM

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