Question

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

Answer 1

1 square =1 not divisible by any number given
2 square=4 not divisible by 5 and 10
3 square=9 not divisible by any number
4 square = 16 not divisible by 5 and 10
5 square=25 not divisible by 4 and 10
6 square is 36 not divisible by 5 and 10
7 square is 49 not divisible by any of the numbers
8 square = 64 not divisible by 5 and 10
9 square = 81 not divisible by any number
10 square = 100 and is divisible by all the 3 numbers
thus,100 the least perfect square exactly divisible by 4,5 and 10
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