If the letters A, B, C, D, E, and F are to be used in a five-letter code, how many different codes are possible if repetitions are not permitted?
A) 7,776
B) 1,296
C) 720
D) 625

Question

Quizplus · Accepted Answer

Since repetitions are not allowed and there are 6 different letters to choose from for the first position, 5 for the second, 4 for the third, 3 for the fourth, and 2 for the fifth, the total number of different codes is calculated by multiplying these numbers together: 6 * 5 * 4 * 3 * 2 = 720.

If the Letters A, B, C, D, E, and F