Suppose $| A |$ =10 And $| B |$ =4 Find the Number of 1-1 Functions

Q89: Find the number of subsets of S

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Q91: Use the binomial theorem to prove

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Q95: If the permutations of 1, 2, 3,

Q96: Use the binomial theorem to expand

Q97: assume that you have a bowl containing

Q98: Find the coefficient of <span

Q99: suppose you have 30 books (15 novels,