x + 3
12. If the mean of the observations : x, x + 3, x + 5, x + 7, x + 10 is 9, the mean of the last three observations is
03
Jul
12. If the mean of the observations : x, x + 3, x + 5, x + 7, x + 10 is 9, the mean of the last three observations is 12. If the mean of the observations : x the mean of the last three observations is x + 10 is 9 x + [...]