Question

If the mean of the observation x,x+3,x+5,x+7,x+10 is 9 find the mean of the last three observation is

Answer 1

Step-by-step explanation:

(x+x+3+x+5+x+7+x+10)/5 = 9

x = 45-25 = 20

(25+27+30)/3 = 82/3

Answer 2

Answer: the answer is 20 because it is in all the numbers

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