Question

How many Numbers lie
between ll² and 12²​

Answer 1

It depends. See below.

Explanation:

Consider the numbers that lie between
`11^2` and
`12^2` as
`x`

If
`x \in \mathbb{R}`, there are infinity numbers between 121 and 144.

If
`x \in \mathbb{Z}` for
`121<x<144` there are 23 integers numbers between them.