List of top General Aptitude Questions on Averages asked in CUET (UG)

The average marks of 12 students is 68. If the marks of one student are excluded, the average becomes 66. The excluded student’s marks are:
The average of 8 numbers is 24. If two numbers 18 and 30 are removed, the average of the remaining numbers is:
The average age of 5 students is 18 years. If the teacher’s age is included, the average becomes 22 years. The teacher’s age is:
The average of 8 consecutive even numbers is 35. The largest number is:
Find the missing term: 2, 6, 12, 20, 30, ?

The area of an equilateral \( \Delta ABC \) is \( 169\sqrt{3} \text{ cm}^2 \).  

Find the in-radius of \( \Delta ABC \).

The ratio of boys to girls in a class is $5:3$. If there are 40 boys, how many girls are there?