Averages
Mean, weighted average, shifts on adding/removing values.
What's covered
This topic carries 26 questions in our bank, drawn from the SSC CGL syllabus and previous-year papers. Every question has a worked-out explanation.
PYQs by year
- SSC CGL 2025 20 questions
- SSC CGL 2024 6 questions
Sample questions
- Q1 • SSC CGL 2024
The average marks (out of 100) of boys and girls in an examination are 75 and 80, respectively. If the average marks of all the students in that examination are 78, find the ratio of the number of boys to the number of girls.
- Q2 • SSC CGL 2025
What is the average of all integers between 150 and 300 that are exactly divisible by 13?
- Q3 • SSC CGL 2025
The average of 12 numbers is 75. The average of the first 5 numbers is 68. The average of the next 5 numbers is 20% more than the average of the first 5 numbers. The 11th number is 12 more than the 12th number. What is the average of the 11th and 12th numbers?
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