That would depend on whether the generally accepted assumption that any person who is not female is male (or vice versa) is actually true. Accepting this initial premise leads us to the conclusion that there are 13 males in the class, and we want to calculte 13 pick 6.
is the number of combinations of things taken at a time, also expressed " pick ", and is calculated by
You can do the rest of the arithmetic yourself.
John
My calculator said it, I believe it, that settles it