Question

show me some irrational numbers, explain what they are!

Answer 1

Basically, a irrational number cannot be formed as a rational number.
If you have the number 1.5 it can be formed as a rational number 3/2.
Therefore 1.5 is not a irrational number.
\[\sqrt{2}\] is one irrational number, since you can never represent it accurately as a/b (rational number). \[\pi\] and e are also irrational numbers that you cannot represent accurately in the form a/b, as a rational number.