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How many different four-letter arrangements can be formed using the six letters A, B, C, D, E and F, if the first letter must be C, one of the other letters must be B, and no letter can be used more than once in the arrangement?

Respuesta :

Answer:

36

Step-by-step explanation:

There is 1 way to make the first letter C and 3 ways to make one of the other letters B. We now have 4 ways to pick the letter for the first remaining spot and 3 ways to pick the letter for the last remaining spot. Thus 1*3*4*3 will get you 36.

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