What is the least perfect square number exactly divisible by each number 6,9,15?
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Answer:
900.
Step-by-step explanation:
First, we have to find out L.C.M of 6,9,15
__________
3| 6, 9 , 15
|--------------
2, 3, 5
L.C.M - 3×3×2×5 = 90.
From this Factorization we can see 2 and 5 are not in pairs .
So, 90×2×5 = 900
square root of 900 : _/900 = 30.
900 is perfect square no. which are exactly divisible by 6,9,15.
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