[Solved] 7.If you are allowed to use numbers 1-9 a

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Posted on Oct 10, 2024

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

8.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?

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

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