Mathematics, 15.12.2020 03:10, tink921

Alex has a collection of cards: 4 are black, 2 are blue, 3 are white, and 1 is brown. What is the probability that he will pick a black card twice without replacement?

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Alex has a collection of cards: 4 are black, 2 are blue, 3 are white, and 1 is brown. What is the pr...