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
[show_answer]The correct answer is: C [/show_answer]
2. The average of 10 consecutive numbers is 50. What is the smallest of these numbers?
a) 45
b) 48
c) 49
d) 50
[show_answer]The correct answer is: A [/show_answer]
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
[show_answer]The correct answer is: D [/show_answer]
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
[show_answer]The correct answer is: B [/show_answer]
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
[show_answer]The correct answer is: D [/show_answer]
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
[show_answer]The correct answer is: B [/show_answer]
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
[show_answer]The correct answer is: A [/show_answer]
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
[show_answer]The correct answer is: D [/show_answer]
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
[show_answer]The correct answer is: C [/show_answer]
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
[show_answer]The correct answer is: D [/show_answer]
