Question 12 If the mean of the observations x, x+3, x+5, x+7 and x+10 is 9, then mean of the last three observation is: A) 1013 B) 1023 C) 1113 D) 1123

Question 12 If the mean of the observations x, x+3, x+5, x+7 and x+10

1.	Question 12 If the mean of the observations x, x+3, x+5, x+7 and x+10 is 9, then mean of the last three observation is: A) 1013 B) 1023 C) 1113 D) 1123
Answer» Question 12 If the mean of the observations x, x+3, x+5, x+7 and x+10 is 9, then mean of the last three observation is: A) $10 \frac{1}{3}$ B) $10 \frac{2}{3}$ C) $11 \frac{1}{3}$ D) $11 \frac{2}{3}$