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Let the mean and variance of four numbers 3,7,x and y(x>y) be 5 and 10 respectively. Then the mean of four numbers 3+2x,7+2y,x+y and x−y is |
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Answer» Let the mean and variance of four numbers 3,7,x and y(x>y) be 5 and 10 respectively. Then the mean of four numbers 3+2x,7+2y,x+y and x−y is |
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