Question

Find the smallest perfect square number which is exactly divisible by 12, 20, 30 and 40.

Answer 1

Answer:

3600

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Answer 2

Answer:

3600

Step-by-step explanation:

first,  find the LCM of the given numbers i.e. 12, 20, 30 and 40

∴2*2*2*3*5=120

Then,

as 2, 3, 5 are not in pairs, we need to multiply those individual numbers as, 2*5*3=30

so,

the least perfect square number which is divisible by each of numbers 12, 20, 30 and 40

=120*30=3600

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