What is the average of the first six even numbers?

Correct option is D

Given:
First six natural even numbers
Formula Used:
​$$\text{Average} = \frac{\text{Sum of elements}}{\text{Number of elements}}$$​​
Solution:
The first six natural even numbers are: 2, 4, 6, 8, 10, 12.
=> Average = $$\frac{2 + 4 + 6 + 8 + 10 + 12}{6} = \frac{42}{6}$$​= 7.