I have a friend who grows in rubbermaids and puts 4 plants in each and he gets good yields. It works fine for him, however I wouldn't recommend it. I would be too worried that the root masses from each plant could grow at different rates and that you could end up with one plant with a massive root mass and the others struggling and fighting for space.
The Oaksterdam University official course book shows 3 pots. One pot had a single plant, another had a single plant but was topped, and the third pot had 3 plants in it. To my surprise the pot with multiple plants yielded the best. Second place was the topped plant and third place was the untopped plant. *note* this book is written by Ed Rosenthal who I'm sure is a good grower but I've also read a lot of his advice that I do not agree with. He's still better than that dumb shit Jorge Cervantes though
In your situation you really should use separate pots. You said "sprouts" which leads me to believe that you're starting from seed and not from clones. This means that you don't know which ones will be male and which will be female. What you don't want to do is have a male or two in the mix alongside your female.