Question

find the least square number which is exactly divisible by each of the numbers 6 ,9 ,15 and 20.
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Answer 1

Answer:

900

Step-by-step explanation:

Smallest least number divisible by 6,9,15 and 20 is its L.C.M. Its LCM is 180. Therefore there is no factor to form pair of 5, so to make it a perfect square we multiply 180 with 5 to get 900. Hence least square number divisible by 6,9,15 and 20 is 900

Answer 2

Answer:

900

Step-by-step explanation:

Common multiples of 6,9,15,20 is 180,360,720,900......

Smallest of all which is a square in these is 900. (OR) The Least common factor is 180 which needs a pair of 5 to get a square.Hence,180×5=900.