Which of the following is a rational number between $$\sqrt5$$​ and $$\sqrt7$$​ ?

Correct option is A

Given:

We are asked to find a rational number between $$\sqrt{5}$$​ and $$\sqrt{7}$$​.

Solution:

​$$\sqrt{5} \approx 2.236 , \sqrt{7} \approx 2.646.$$​​

We need a rational number between 2.236 and 2.646. Among the options:

Option A: $$2 \frac{2}{5} = 2.4,$$​ which lies between 2.236 and 2.646.

Thus, option (A) is right answer.