Question

find the least perfect square exactly divisible by each one of the number: 4,5,10

Answer 1

Here is your answer.

#The least square number which is divisible by all three-4,5,10 is 100.

hope it helps.

Answer 2

The Square of L.C.M of the given number is the perfect square exactly divisible by given numbers. We will divide the number obtained so till we get a smallest number & is perfect square.

L.C.M of 4,5,10 is 20

20²=400

so now divide it by 2

400/2=200 is not perfect square.

now divide by 2

100 is a perfect square.

least perfect square exactly divisible by each one of the number: 4,5,10 is 100