find the smallest square number which is divisble by 8 ,12and 15
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Originally Answered: What is the least square number which is exactly divisible by thenumbers 8, 12, 15, and 20? LCM = 2^3x3x5 = 120. Multiply 120 by 2, 3 and 5 to get 3600 which is a square of 60. and divisible by 8,12, 15 and 20.
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Answer:
HCF-20
8=2×2×2=2³
12=2×2×3=2²×3
15=3×5
20=2×2×5=2²×5
a number which is divisible by each of them should contain
2³x3x5
If it is a perfect square number,it should have even powers.
So,
2⁴×3²×5²=16×9×25
=3600
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