AP and TS EAMCET Engineering Model Paper 18
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Question : 50 of 160
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If the mean of a set of observations x 1 , x 2 , . . . , x 10 is 20 then the mean of x 1 + 4 , x 2 + 8 , x 3 + 12 , . . . , x 10 + 40
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