I need just a little help answering some math questions. Maybe someone could help?

1.) What is the probability of drawingEXACTLY2 red cards in a hand of 3 cards frawn from a deck of 52 cards?

2.) State the coefficient of the term containing X^-11 in the expansion of (4X^2+X^-3)^7?

3.) A coin is tossed 20 times in a row. The probability of exactlyrheads occurring is given by the term containingp^rin the binomial expansion of (p+q)^20, wherep=q=0.5. Calculate the probability that exactly 9 heads will be tossed.

4.) A bag contains 12 blocks, 5 of which are red, 4 are blue, and the rest are green. If 7 blocks are selected randomly, determine the number of ways thatAT LEAST2 blocks of each color are included.

5.) A group of vehicles consists of 7 [COLOR=green! important]cars and 6 trucks. Five are chosen randonly to be in the show room at a car [COLOR=green! important]dealership[/COLOR]. Determine the probability thatAT LEASTone of each vehicle is chosen.

6.) The mathematics department has five committees. Each of these committees meets once a month. Membership on these committees is as follows.

Committee A: Shawn, Larry, Elliott

Committee B: Elliott, Warner, Henry, Kelly

Committee C: Warner, Larry

Committee D: Andrew, Larry, Shawn

Committee E: Benny, Candy, Kelly, Shawn

What is the minimum number of time slots needed to schedule the committee meetings with no conflicts?

So I these are just the questions I need answered. Hope someone can help. I think I got number 1 and number 5 but I just want to make sure. Thanks.[/COLOR]