A town council consists of 8 memebrs including the mayor.

a) How many different committees of 4 can be chosen form this council?

b) How many of these commitees include th amyor?

c) How many do not include the mayor?

For part A I am not positive but I did the combination 9C4 and got 126 possible committees. If this is incorrect I would appreciate an explanation.

For part B i am not sure how that would work out. For part C I assume I subtract the answer from part B from part A. Please help. Thank you.