[填空题]
A school basketball t: hob hf1kz22heam oxsix j 5)/ixg7f 5 students is selected from 8 boys and 4 girls.
1. Determine how many possible teams can be chosen.
2. Determine how many teams can be formed consisting of 3 boys and 2 girls?
3. Determine how many teams can be formed consisting of at most 3 girls?