the least square number which is exactly divisible by 10 12 15 and 18
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lcm =2×2×3*5*3=180.
factor of 180{2^2*3^2×5} . so , it is clear that the number must be multiplied by 5to get perfect square.
factor of 180{2^2*3^2×5} . so , it is clear that the number must be multiplied by 5to get perfect square.
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