The average of first 155 even numbers is

Correct option is A

Given:

We need the average of the first 155 even numbers.

Even numbers sequence: 2, 4, 6, …, 2n.

Formula Used:

Sum of first n even numbers = n(n + 1)

Average = $$\frac{n(n+1)}{n}$$​ = n + 1 

Solution:

Here, n = 155

Average = 155 + 1 = 156