prove set of irrational number is uncountable

Hi, can friends here please help me with this question? I'm really struggling with it.

Prove the set of irrational number R\Q is uncountable.

I know the idea is try to find the bijection function, right? But I just cannot do it. Please help me with it. Thanks a lot.

prove set of irrational number is uncountable

I was given R is uncountable. I guess I have the idea is that prove union or intersection of uncountable is uncountable as well. But I just really don't know how to do in details. Please help me. Thanks a lot.