Average- PA SA Exam- Practice high-quality MCQs for the PA SA Exam covering key postal rules, procedures, and current schemes. Ideal for quick revision and accurate self-assessment based on the latest syllabus.
1. The average of 5 numbers is 20. If four of the numbers are 12, 18, 25, and 30, what is the fifth number?
a) 25
b) 30
c) 15
d) 40
The correct answer is: C
2. The average of 10 consecutive numbers is 50. What is the smallest of these numbers?
a) 45
b) 48
c) 49
d) 50
The correct answer is: A
3. The average of 4 numbers is 15. If three of the numbers are 10, 20, and 30, what is the fourth number?
a) 10
b) 15
c) 20
d) 25
The correct answer is: D
4. The average of 8 numbers is 36. If one of the numbers is replaced by 48, the average becomes 38. What is the replaced number?
a) 30
b) 32
c) 34
d) 36
The correct answer is: B
5. The average of three numbers is 45. If one number is 50, and the second is 40, what is the third number?
a) 30
b) 35
c) 40
d) 45
The correct answer is: D
6. The average of the ages of 5 students in a class is 16 years. If one student’s age is 20 years, what is the average age of the remaining 4 students?
a) 14 years
b) 15 years
c) 16 years
d) 17 years
The correct answer is: B
7. The average of 7 numbers is 28. If 6 of the numbers are 25, 35, 30, 20, 28, and 33, what is the seventh number?
a) 25
b) 30
c) 35
d) 40
The correct answer is: A
8. The average of 10 numbers is 45. If one of the numbers is 30, what is the average of the remaining numbers?
a) 42.67
b) 43.67
c) 44.67
d) 46.67
The correct answer is: D
9. The average of three numbers is 72. If two numbers are 70 and 80, what is the third number?
a) 72
b) 75
c) 66
d) 85
The correct answer is: C
10. The average of five numbers is 30. If the numbers are 24, 36, 42, and 48, what is the fifth number?
a) 30
b) 32
c) 34
d) 0
The correct answer is: D
