Solve the problem.
-In how many ways can 2 letters be chosen from the set $\{A, B, C, D, E, F\}$ if order is important and no repeats are allowed?
A) 15
B) 30
C) 12
D) 36

Question

Quizplus · Accepted Answer

Since order is important and no repeats are allowed, we use permutations. The number of ways to choose 2 letters from 6 is given by 6P2 = 6! / (6-2)! = 6 * 5 = 30.

Solve the Problem {A,B,C,D,E,F}\{A, B, C, D, E, F\}{A,B,C,D,E,F} If Order Is Important and No Repeats Are Allowed? A)

Solve the Problem $\{A, B, C, D, E, F\}$ If Order Is Important and No Repeats Are Allowed?
A)