Question

Between which two consecutive whole numbers does ✓20 lie? 1) 5 and 6 2) 4 and 5 3) 3 and 4 4) 2 and 3

Answer 1

option 2

Explanation:

consider perfect square numbers either side of 20, that is

16 and 25 , then

16 < 20 < 25 , so

`√(16)` <
`√(20)` <
`√(25)` , that is

4 <
`√(20)` < 5

the
`√(20)` lies between the numbers 4 and 5