Question 1.
How many ways can the word banana be rearranged so that all the a’s are together.
Question 2.
Solve for n
n+1P4 = 32760
Question 3.
Solve for n
nC4 =5 nC3
Question 4.
Expand (4x – 1/(x))^5
Question 5.
A group of 15 people are waiting to enter a dinner, 4 are chosen at random, if they are then seated around a circular table. How many combinations of this situation are there?
Question 6.
Two successive numbers, 715 and 1287, are found in the nth row of a pascal triangle. Determine the n value.
Question 7.
Without expanding, what is the 6th term of (3x – 2y)^9
Answer.
Question 1.
Question 2.
n=14
Question 4.
Question 5.
Question 6.
n=13