Question

Find least number by which 8640 is to be divided to get a perfect square

Answer 1

Answer:

15.

Step-by-step explanation:

8640=2*2*2*2*2*2*3*3*3*5

=(2*2*2*3)^2 * 3*5

Therefore, to get a perfect square we should divide 8640 by 3*5=15.

Answer 2

Since

8640=2*2*2*2*2*2*3*3*3*5

So,2² * 2² * 2² * 3² * 3*5

3 and 5 are left which do not form square

so 3*5=15

Answer is 15

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