1. In how many ways can a committee of 5 be formed from 5 juniors and 7 seniors if the committee must have 3 seniors? a. 350 b. 355 c. 360 d. 380
2. A singer/performer is auditioning for a musical play. If she is required to sing any three of the 7 prepared songs, in how many ways can she make her choice?
3. If there are 10 people and only 6 chairs are available, in how many ways can they be seated?
4. Four married couples want to have their pictures taken. In how many ways can they arrange themselves in a row if (a) couples must stay together? (b) they may stand anywhere?