Question : What is the average of first 10 natural numbers?
Option 1: 5.5
Option 2: 10
Option 3: 5
Option 4: 10.5
Answer (1)
9th Jan, 2024
Correct Answer: 5.5
Solution :
Average = $\frac{\text{Sum of observations}}{\text{number of observations}}$
Average of first $n$ natural numbers = $\frac{n + 1}{2}$
Here $n$ = 10
⇒ $\frac{10 + 1}{2}=\frac{11}{2}= 5.5$
Hence, the correct answer is 5.5.
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