​Find the mean of x + 77, x + 7, x + 5, x + 3 and x – 2. ​

Correct option is D

Given:

x + 77, x + 7, x + 5, x + 3 and x – 2

Formula used:

Mean = $$\frac{\text {Sum of all terms}}{\text{Number of terms}}$$

Solution:

Mean = $$\frac{x + 77 + x + 7 + x + 5 + x + 3 + x – 2}{5}$$

​Mean = $$\frac{5x + 90}{5}$$

​Mean = $$\frac{5x}{5} + \frac{90}{5}$$

​Mean = x + 18

Thus, option (d) is correct.