Solve the problem.
-How many different 4-letter radio-station call letters can be made if the first letter must be K or W, Repeats are allowed, but the call letters cannot end in an O?
A) 35,152
B) 16,900
C) 33,800
D) 456,976

Question

Quizplus · Accepted Answer

The first letter has 2 choices (K or W). The next two letters can be any of the 26 letters of the alphabet, so each has 26 choices. The last letter has 25 choices (any letter except O). Therefore, the total number of combinations is 2 * 26 * 26 * 25 = 33,800.

Solve the Problem. -How Many Different 4-Letter Radio-Station Call Letters Can Be Made