Answer: 2, 8, 21, and 168.
Explanation:
First you start by clicking
then go to the next number
and so on.
Doesn't have 2, so 2 is an irrational number.
= 4 Its a rational number
= 9 Its a rational number, But It doesn't have 8, so 8 is an Irrational number.
= 25 Its a rational number, but doesn't have 21, so 21 is an Irrational number.
and finally,
= 169 Is a rational number, but it doesn't have 168, so 168 is an Irrational Number.
Hope It was the correct answer!
-Mrs.Egg :3