Mathematics

8 June, 18:55

1. John has 3 red markers and 5 blue markers. What is the probability that he picks a red marker, and then, without replacing it, selects another red marker?

2. Gina has 20 collector's stamps. 8 stamps are blue, 6 are red, and 5 have both colors. If a stamp is chosen at random, what is the probability that the stamp has a blue or red color on it?

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