The average of first 136 even numbers is

Correct option is D

Given:

Average of first 136 even numbers is

Formula Used:

Average = $$\frac{\text{First term} + \text{Last term}}{2}$$​​

Solution:

First even number = 2

136th even number = 2 × 136 = 272

Average = $$\frac{2 + 272}{2} = \frac{274}{2} = 137$$

Alternate Solution:
Average of first n even numbers = (n + 1)
Total even numbers (n) = 136
=> Average = n + 1 = 136 + 1 = 137