Question: You simultaneously grab two balls at random from an urn con- taining two red balls, one blue ball and one green ball. What is the

You simultaneously grab two balls at random from an urn con- taining two red balls, one blue ball and one green ball. What is the probability that you have grabbed two non-red balls given that you have grabbed at least one non-red ball? What is the probability that you have grabbed two non-red balls given that you have grabbed the green ball? Can you give an intuitive explanation of why the second probability is larger than the first one

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