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Question

Find the smallest number that is completely divisible by 28 and 42.

A
48
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B
84
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C
14
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D
28
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Solution

The correct option is B 84

The smallest number that is completely divisible by 28 and 42 is the LCM of the two numbers.

228,42214,2137,2177,71,1

Hence, the LCM of 28 and 42 = 2×2×3×7=84


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