SSC CGL Average question with solution
AverageModerate
The average of 9 numbers is 22. If one number is removed, the average of the remaining numbers becomes 20. What is the removed number?
- (A)22
- (B)38
- (C)29
- (D)47
Correct answer: (B) 38
Sum of all 9 numbers = 9 × 22 = 198. Sum of the remaining 8 numbers = 8 × 20 = 160. The removed number is the difference: 198 − 160 = 38.
Shortcut: Removed number = old average + (n − 1) × (old average − new average) = 22 + 8 × (2).
About this question
- Subject
- Quantitative Aptitude
- Topic
- Average
- Exam
- SSC CGL
- Attempts on SSC Rank
- Not attempted yet
More SSC CGL Average questions
Last reviewed on 5 Oct 2026. Spotted a mistake? See our correction policy.