Question

Squares and Square Roots

18. Find the least square number which is exactly divisible by each of the numbers 8. 12. 15
and 20.

Answer 1

Answer:

The required solution of the problem is  

Let find the LCM of the given numbers i.e. 8,12,15and20

That is,  

2×2×2×5×3=120

But, 2,3,5 are not in pair so

multiply these with LCM

=120×3×5×2

=3600

Therefore there are 3600 numbers.

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Answer 2

Answer:

first we need to find the LCM  of given numbers 8,12,15 and 20.

2*2*2*5*3=120

Then  as 2, 3, 5 are not in pairs, we need to multiply the LCM with 2*5*3=30

so, least perfect square number which is divisible by each of numbers 8 12 15 and 20

=120*30=3600

Step-by-step explanation:

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