The number of non-square numbers between 87$$^2$$​ and 88$$^2$$​ is:

Correct option is A

Given:

We need to find the number of non-square numbers between 87$$^2$$​ and 88$$^2$$​​

Concept Used:

The number of natural numbers between n$$^2$$​ and (n+1)$$^2$$​ is

(n+1)$$^2 - n^2 - 1$$​ = 2n

Solution:

Non-square numbers between  87$$^2$$​ and 88$$^2 = 2 \times 87$$​ = 174