Find the smallest square number that is divisible by each of the numbers 4, 9 and 10.

L.C.M. of 4, 9 and 10 is 180.
Prime factors of 180 = 2 x 2 x 3 x 3 x 5
Here, prime factor 5 has no pair. Therefore 180 must be multiplied
by 5 to make it a perfect square.
∴ 180 x 5 = 900
Hence, the smallest square number which is divisible by 4, 9 and 10
is 900.

Class 8 Maths Chapter 6 Exercise 6.3 Solution in Video

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