Exams › SSC CGL (Prelims) › General

What is the average of 6 consecutive odd numbers starting from 15?

1. 19
2. 20
3. 21
4. 22

Correct answer: 20

Solution

The six consecutive odd numbers are 15, 17, 19, 21, 23, and 25. Their average is the mean of the first and last terms: (15 + 25) / 2 = 20.

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