Quantitative Aptitude • Ratio, Average & MixtureEasy
What is the average of the first 22 natural numbers?
A. 22
B. 11.5✓ Correct Answer
C. 23
D. 11
💡 Solution & Explanation
The sum of the first n natural numbers is n(n + 1)/2 = 22 × 23 ÷ 2 = 253. Average = 253 ÷ 22 = 11.5. For any evenly spaced list, the average is also the middle of the first and last numbers.
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