Question: leave in combination format: Question 12 (4 points) a) Given the set {A, B, C, D, E, F], in how many ways can you take

leave in combination format:

Question 12 (4 points) a) Given the set {A, B, C, D, E, F], in how many ways can you take 4 letters? b) Given the set {A, B, C, D, E, F), in how many ways can you take any number of letters? However, you must take at least one letter. c) Given the set {AAA BBB CCC DD E F), in how many ways can you take any number of letters. However, you must take at least one letter. d) Given the set {AAA BBB CCC DD E F), in how many ways can you take any number of letters if you must take at least one A and at least 2 B's

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