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

1.	If the mean of five observations x, x+2, x+4, x+6, x+8 is 11, then the mean of first three observations is:
Answer» If the mean of five observations $x, x + 2, x + 4, x + 6, x + 8$ is $11$ , then the mean of first three observations is:

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

Answer»

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