How many permutations of the two letters C and D are possible?

Name: How many permutations of the two letters C and D are possible?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

There are 2 letters and we are arranging them in a line, so the number of permutations is simply 2 factorial, or 2! = 2 x 1 = 2. We have CD and DC as possible arrangements, which gives us 2 permutations. Therefore, the answer is C) 4 is the best choice.

How Many Permutations of the Two Letters C and D