An urn contains four balls numbered 1, 3, 4, and 6. If a person selects a set of two balls at random, what is the expected value of the product of the numbers on the balls?

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The Answer of An urn contains four balls numbered 1, 3, 4, and 6. If a person selects a set of two balls at random, what is the expected value of the product of the numbers on the balls?

An Urn Contains Four Balls Numbered 1, 3, 4, and 6