Question

What is the mean of x,X + 1, X + 2 ,X + 3 ,x+4 and x+5 ?

Answer 1

(5x+15)/5
5(x+3)/5
x+3 is the answer

Answer 2

Mean = sum of the numbers / Total number
Therefore,

mean = (x + x + 1 + x + 2 + x + 3 + x + 4 + x + 5) / 6
mean = (6x + 15) / 6
mean = x + 5/2
mean = x + 2.5