If the mean of the observations : x+1,x+2,x+3,x+4,x+10 is 16, the mean of the first three observations isA) 20B) 17C) 14D) 9

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If the mean of the observations : x+1,x+2,x+3,x+4,x+10 is 16, the mean of the first three observations isA) 20B) 17C) 14D) 9
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