Probability......

I was checking Griffin's homework last night after he had gone to bed, when I got to this problem I laughed out loud at his answer. Yes.....Griff you are right, when you flip a coin I am "CERTAIN" it will be either heads or tails. I'm not quite sure that is the answer your teacher had in mind. It certainly will be one or the other, but I think she wanted something like 50/50......