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11-07-2018
Mathematics

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A card is drawn from a well-shuffled deck of 52 cards. find the probability that the card is a black card or a 3.

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13-07-2018

Since the number of black cards are 26 (spades and clubs) (13 for each kind). And there are 4 pieces of number 3 on the deck. That gives us 30. So the answer is 30/52.

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