The board game Guess Who? only has five girls to choose from. If you're a little girl playing against your older brother, you'll probably always choose a girl and always lose. Jennifer O'Connell's six-year-old daughter wrote to Hasbro to find out why such unfairness exists in the world:
I think it's not fair to only have 5 girls in Guess Who and 19 boys. It is not only boys who are important, girls are important too. If grown ups get into thinking that girls are not important they won't give little girls much care.
Guess Who? is a guessing game based on a numerical equation. If you take a look at the characters in the game, you will notice that there are five of any given characteristics. The idea of the game is, that by process of elimination, you narrow down who it isn't, thus determining who it is. The game is not weighted in favour of any particular character, male or female.
So, Guess Who? only has five girls because making the genders equal would make one question eliminate half of the portraits. Making one board all boys and the other all girls (with other characteristics being equal) might equalize things, but might just be confusing. We need an edition where all of the faces are pandas, but some have glasses, hats, or mustaches.