Question

Find the least square number exactly divisible by 8, 12, 15 and 20.

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Answer 1

Answer:

$\huge\mathfrak\pink{LCM = 2^3 *3*5 = 120}$

Answer 2

Factorise each individual number. i.e.
8= 2*2*2
12= 2*2*3
15 = 3*5
20= 2*2*5

Let the least square number be “x” which should be divisible by all 4 numbers.

Hence x should be = 2*2*2*3*3*5*5*2 = (60)^2