Question

If the mean of x, X+2, X+4, X+6, x+8 is 11, then the mean of first three
observations is -
​

Answer 1

mean of 1st three terms is 27

Answer 2

Answer:

x+x+2+x+4+x+6+x+8/2=11

5x+20=11*2

5x+20=22

5x=2

x=2/5

mean of three no is

2/5+12/5+22/5/3

36/5//3

36/5*1/3

36/15

12/5