Find the least perfect square number which is divisible by 6,9,42,45
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L.C.M of 6 ,9 ,42,45=630
=630=2*3*3*5*7
=The prime factors 2,5,7 are not in pair.So, it is not a perfect square.
=To form a perfect square, all prime factors should be in pair.For that, we want to multiply 630 by 2*5*7=70.
=630*70=44100
So, the required square number which can be divisible by 6,9,42,45 is 44100.
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Step-by-step explanation:
44100 is a correct answer hope its help you
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