Solve the problem.
-How many 6-letter codes can be formed using the letters A, B, C, D, E, F, G, H, and I. Repeated letters are allowed.
A)10,077,696
B)84
C)60,480
D)531,441

Question

Quizplus · Accepted Answer

Since repetition is allowed and there are 9 letters to choose from for each of the 6 positions in the code, the total number of possible codes is $9^6 = 531,441$.

Solve the Problem. -How Many 6-Letter Codes Can Be Formed Using the Letters