If we were asked the "experimental probability", the answer would have been
[tex]\frac{47}{100}\text{ that is number of outcomes/total outcomes. }[/tex]But we were asked the "theoretical probability". And in theory, we can get either a head or a tail if a coin is flipped. So that makes it
[tex]\frac{1\text{ outcome }}{total\text{ outcomes of 2 }}\text{ = }\frac{1}{2}[/tex]Therefore, the answer is
[tex]\frac{1}{2}[/tex]