Please help solving this

Combinations Assignment 1. Jessica is in a very big hurry. She needs 3 birthday cards and 2 wedding cards. She runs in to the corner store which has 12 birthday cards and 6 wedding cards. How many different combinations of cards might she leave with? 2. Kyle got 9 new gifts for his birthday. 1. How many ways can he choose 4 of them to go to his dad's house? 2. How many ways can he choose 5 of them to go to his dad's house? 3. There were 19 questions in your last assignment. If I want put 2 of them on your test, how many different combinations of questions could I choose? 4. Note: The answers in the next question are quite large. Depending on your calculators capability it may give you scientific notation. At Governor Simcoe there is a robotics team, a programming team, and a drama club. The three groups are teaming up to put on a show for the grade 8 students. They need 12 people to volunteer. If there are 15 robotics team members, 7 programmers, and 11 thespians. How many ways can they choose a committee if 1. there are no restrictions. 2. there are an equal number from each group. 3. 6 robotics team members are chosen. 4. Mohamed must be included. 5. Ryan must not be chosen. 6. Jessica and Ryan cannot work together. 7. at least one programmer is chosen. 8. at least 2 robotics members are chosen. 9. there must be between 2 and 4 robotics members chosen