Our Underwater Basket-Weaving club has 12 members. In how many ways can 5 club members be chosen to attend a basket-weaving conference if Adi must attend the conference and Noor isn't willing to attend the conference?
If adi has to attend the conference there are 11 choose 4 ways to pick out the 4 other members
if noor isn't willing there are 10 choose 4 ways to pick out the other 4 members.
After figuring out that information i don't know how to continue