Permutations or combinations

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Permutations or Combinations

A. If you are allowed to use numbers 1-9 and need to choose the pass code of an exact 4 digit code, how many possibilities are there?

B. If there are 30 students in the class and we need to select a President and Treasurer for our meetings, how many possibilities are there?

C. In playing a card game, I am dealt 5 cards, how many possibilities are there for my hand?

Reference no: EM132160577

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