Question

find the smallest number by which number 72 must be multiplied to obtain a perfect square​

Answer 1

Answer:

3

i.e. 216 is a perfect cube. ∴ The smallest number required to multiply 72 to make it a perfect cube is 3.

Answer 2

72=2×2×2×3×3

smallest number =2

72×2=144

144=2×2×2×2×3×3

144=2×2×3

144=12