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1. An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are...

1. An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are chosen at random to be redecorated, what are the probabilities that a) All will be two-bedroom apartments ? (b) 2 will be two-bedroom apartments and 2 will be three-bedroom apartments ?

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