find the least square number which is externally divisible by each of the number 6 9 15 and 20
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Answer:
900
Step-by-step explanation:
LCM of (06,9,15,20) =2×2×3×3×5=180
On resolving 180 into prime factors 180.
=2×2×3×3×5
Therefore, there is no factor to form pair of 5 so to make it a perfect square so we multiply 180 with 5 to get 900.
Hence least square number divisible by 6,9,15 and 20 is 900.
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