Quantitative Aptitude • Ratio, Average & MixtureEasy
What is the average of the first 13 odd numbers?
A. 6.5
B. 13✓ Correct Answer
C. 25
D. 14
💡 Solution & Explanation
The sum of the first n odd numbers is n², so here it is 13² = 169. Average = 169 ÷ 13 = 13. For any evenly spaced list, the average is also the middle of the first and last numbers.
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