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

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

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

if the mean of the observations x, x+ 4, x + 5, x + 7, x + 9 is 9, then th mean of the last three observations is :

If the mean of 5 observations x , x+2, x+4, x+6 and x+8 is 11, then the mean of the last three observations is (a) 11 (b) 13 (c) 15 (d) 17

Assertion : If the mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11, then mean of last three observations is 8. Reason : Mean of n observations is equal to Sum of observations upon Number of observations

If the mean of 2x, 2x + 3, 2x + 5, 2x + 7, 2x + 10 is 11, the mean of the last three observation is

If the mean of observations x,x+2,x+4,x+6 and x+8 is 11, find the mean of the first three obervations.

If the mean of observations x,x+2,x+4,x+6 and x+8 is 11, find : the mean of the first three obervations.