In: Advanced Math
A student has 10 tickets to the show but she has 20 friends who want to see the show. Find the number of ways she can choose ten to give the tickets to, where:
a. There are no restrictions. Simplify your answer to a final number.
for questions b and c Do not simplify your answers. Leave in Combinatorics format.
b. Two of the friends are twins so if you invite one you have to invite the other
c. Two of the friends do not like each other so if you invite one you cannot invite the other.