Question

find the least square number which is divisible by each of the number 6,9 and 15​

Answer 1

Answer:

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Answer 2

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Smallest/ least number divisible by 6,9,15 and 20 is it's LCM i.e. :-

LCM=2 × 2 × 3 × 3 × 5 = 180

On resolving 180 into prime factors 180.

= 2 × 2 × 3 × 3 × 5

Therefore, there is no factor to form pair of 5 so to make it a perfect square so we multiply 180 with 5 to get 900.

Hence least square number divisible by 6,9,15 and 20 is 900.