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LCM

L.C.M. of 1 a...

Question

L.C.M. of 1 and 90 is __.

A

90

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B

360

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C

45

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D

1

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Solution

The correct option is A
90

Multiples of 90 will be 90, 180, ...... and
Multiples of 1 will be 1, 2, 3...90 and so on.
From the above, we can say that, the least common multiple of 1 and 90 will be 90.

The L.C.M. of 1 and any other number, say 'x' is always 'x'.

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