## Write all possible selections of two letters that can be formed from the letters A, B, C, D, E, and F. (The order of the two letters is not

Question

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## Answers ( )

Answer:{(A,B),(A,C),(A,D),(A,E),(A,F),(B,C),(B,D),(B,E),(B,F),(C,D),(C,E),(C,F),(D,E),(D,F),(E,F)}

Step-by-step explanation:We are

given the followingin the question:A, B, C, D, E, and F

We have to select 2 letters from these 6 letters such that the order of two letters is not important.

Possible combinations =[tex]^6C_2 = \displaystyle\frac{6!}{2!(6-2)!} = \frac{6!}{2!\times 4!} = 15[/tex]

Thus, 15 combination are possible.

Combinations are{(A,B),(A,C),(A,D),(A,E),(A,F),(B,C),(B,D),(B,E),(B,F),(C,D),(C,E),(C,F),(D,E),(D,F),(E,F)}