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Question
The first common multiple of 2, 5, and 4 is
The first common multiple of 2, 5, and 4 is
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Solution
The correct option is B 20
Multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ...
Multiples of 5 are 5, 10, 15, 20, 25, 30, 35, ...
Multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, ...
So, the first common multiple of 2, 5, and 4 is 20.
Multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ...
Multiples of 5 are 5, 10, 15, 20, 25, 30, 35, ...
Multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, ...
So, the first common multiple of 2, 5, and 4 is 20.
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