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A set of problem solving cards with 6 different scenarios. Some of them are brain teasers, and you may need to think in different ways to solve the problem.
Thomas had a bag with 30 marbles. If 12 of them are red, what is the probability that he will pull a red one out randomly? Common Core: Grade 6 Statistics and Probability: 6.SP.A.1, 6.SPA.2