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a box contains 10 tags, numbered 1 through 10, with a different number on each tag. A second box contains 8 tags numbered 20 through 27, with a different number on each tag. One tag is drawn at random from each box. What is the expected value of the sum of the numbers on the two selected tags

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a box contains 10 tags, numbered 1 through 10, with a different number on each tag. A second box con...
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