Yes, it matters, don't use hermie seeds, eeewwwww.

Chances are you WILL get a male if you plant 3 seeds.

But there are ways to sort of point the babies in the right direction...

The amount of moisture, P to N ratio in the seedbed, warmth, humidity, and light spectrum all play a role in determininge sex.

And then there's a fantastic old wives tale... I've heard it perpetuated here from some VERY reputable sources... I've never tried it myself mind you... but Nature has a way of keeping itself in balance, and the practice of growing multiple plants from seed in one pot is said to virtually GUARANTEE that you will get both sexes in that pot. I don't know why it happens (certainly hormonal, if the myth has any validity, though the chemical paths are a total mystery, lol), but I think at the very least it would be a neat experiment.

lol I'll add it to my 'things to do' list... along with all that laundry...