Question

The smallest whole number by which 20 should be

multiplied so as to get a perfect square number is ______.​

Answer 1

Answer:

5

Step-by-step explanation:

20 x 1 = 20  not a square

20 x 2 = 40 not a square

20 x 3 = 60 not a square

20 x 4 = 80 not a square

20 x 5 = 100 perfect square of 10