Question

find the smallest number by which 180 should be multiplied to get a perfect square​

Answer 1

First find the factors
180÷2=90
90÷2=45
45÷5=9
9÷3=3
3÷3=1
Now factors are 2,2,3,3,5
Smallest no to be multiplied is 5

Answer 2

20 is smallest number by which you can mltiply