Question

Which two consecutive whole

numbers is V90 between?
8 and 9
b
7 and 8
10 and 11
d
9 and 10

Answer 1

Given:

The value is
`√(90)`.

To find:

The two consecutive whole numbers such that
`√(90)` lies between those numbers.

Solution:

The perfect square numbers between 1 to 100 are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100.

We know that, 90 lies between 81 and 100.

`81<90<100`

`9^2<90<10^2`

The value of x radical cannot be negative. So taking square root on each side, we get

`√(9^2)<√(90)<√(10^2)`

`9<√(90)<10}`

The given number lies between 9 and 10. Therefore, the correct option is (d)