Question

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➡️ Find the least perfect square number exactly divisible by 8, 15, 20, 25.

Answer 1

To find this we need to find the LCM of 8, 15, 20 and 25 which is 1800

Prime factorisation of 1800 is 2*2*2*3*3*5*5

We see that 2 is not in a pair. So 1800 is not a perfect square so we need to multiply it by 2 to obtain the answer.

1800*2 = 3600

3600 is the answer.

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