Question

many members were there and how much did each contribute?
08. Find the least square number, exactly divisible by each of the given numbers: 6,9,15 and 20.
09. Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also​

Answer 1

Answer:

8) first we will find the LCM

   LCM is 2 x 2 x 3 x 3 x 5 = 180

   since the factors of 180 do not form pairs, we know it is not a perfect square.

   2 forms a pair

   3 forms a pair

5 does not form a pair

so, the least will be obtained after multiplying 180 x 5

= 900