Question

find the smallest square number which is divisible by each of the number 9 15 and 20​

Answer 1

Answer:

30 is the smallest square number which is divisible by each of the number 9 15 and 20

Answer 2

Frist you have to find the lcm of the given numbers that is 9, 15 and 20

To find lcm

= > 2 \times 2 \times 3 \times 3 \times 5 = 180=>2×2×3×3×5=180

So we will consider 180 as prime Factorization.

Now, Simply 180×5 = 900.

So the Square root of 900 will be 30 .

(if you don't know how to find square root of 900 you can refer the attachment)

Hence, 30 is the smallest square number,which is divisible by each 9,15,20.

Thanks !