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There are four unknown numbers. The mean of the first two numbers is 4 and the mean of the first three is 9. The mean of all four numbers is 15, if one of the four numbers is 2, find the other 3 numbers |
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Answer» There are four unknown numbers. The mean of the first two numbers is 4 and the mean of the first three is 9. The mean of all four numbers is 15, if one of the four numbers is 2, find the other 3 numbers |
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