13: Frank, Liam, Chan, and Thao are going to a movie. Determine the number of ways they can sit in a row of four chairs, if Frank and Chan must sit beside each other

14: There are 13 adults and 18 children who can be selected to go on a trip. Determine the number of ways 4 adults and 7 children can be selected if Sandra, one of the adults, must be selected.

15: There are 20 boys and 11 girls who can be selected to be on a team. Determine the number of ways that 7 boys and 5 girls

12: Explain why 11! is not the total number of 11-letter arrangements that can be made from the word CELEBRATION

Question 9 (1 point) For which of the following terms is a = 55 in the expansion of (x +y)ll? ax 3 y B O ax By 3 ax2ys O ax 11 Question 10 (1 point) How many terms are there in the expansion of (2x - 4y)12?Question 16 (3 points) Solve, algebraically. P, =6 n+1 2 . . .Question 7 (1 point) A scout troop is arranged in a circle for an opening ceremony. If there are 9 scouts, in how many unique ways can they stand around the circle? Question 8 (1 point) After a sports, tournament every player shakes hands with every other player once. If there are 36 handshakes in total, how many players are at the tournament