Question

Find the least square number divisible by each one of 8,9 and 10

Answer 1

3600 is the least no which is divisible by 8,9,10

Answer 2

Numbers are 8,9,10

Write them in pair form

2*2*2*3*3*2*5

=720

Now for a number to be a square it should have a fixed pair

If we multiply it by 5 which is unpaired

We get,

720*5

=3600

Which is divisible by 8,9 and 10 and is square of 60

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