# Find the average of first 91 natural numbers.

**Answer: (4) 46**

**Explanation:-**

**Formula-**

**The sum of natural numbers = n(n + 1)/2**

**Where, ‘n’ denotes the numbers observation.**

Then, the sum of first 91 natural numbers = 91 (91 + 1)/2

= 91 x 92/2

= 91 x 46

= 4186

Now, the average of first 91 natural numbers = 4186/91

= 46

Hence, the answer is (4) 46.