[" 28.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 "]

If the mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11, then the mean of the first 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

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.

The mean the five observations x,x + 2 , x + 4, x + 6, x + 8 is 11 Then, the mean of the first three observations is

If the mean of five observations x, (x+2) , (x+4) ,(x+6) and (x+8) is 11 , then the mean of first 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 observations x,x+2,x+4,x+6 and x+8 is 11, find the value of x