Q1. Find the average of 30, 21, 66, 79.
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Answer: C. 49
Sum = 196, count = 4, average = 196/4 = 49.
Average Questions for SSC CGL (with Answers)
56 Average MCQs from the Quantitative Aptitude section, with answers and short explanations.
Score: 0 / 0
Q2. Find the average of 73, 75, 49, 35.
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Answer: D. 58
Sum = 232, count = 4, average = 232/4 = 58.
Q3. Find the average of 91, 50, 73, 28, 13.
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Answer: B. 51
Sum = 255; average = 255/5 = 51.
Q4. Find the average of 13, 41, 78, 52.
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Answer: A. 46
Sum = 184; average = 184/4 = 46.
Q5. Find the average of 88, 34, 71, 55.
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Answer: C. 62
Sum = 248; average = 248/4 = 62.
Q6. Find the average of 57, 18, 26, 19.
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Answer: C. 30
Sum = 120; average = 120/4 = 30.
Q7. Find the average of 66, 12, 58, 72, 29, 57.
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Answer: A. 49
Sum = 294; average = 294/6 = 49.
Q8. Find the average of 38, 76, 16, 74.
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Answer: A. 51
Sum = 204; average = 204/4 = 51.
Q9. Find the average of 87, 73, 27, 98, 60.
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Answer: B. 69
Sum = 345; average = 345/5 = 69.
Q10. Find the average of 15, 43, 12, 79, 26.
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Answer: A. 35
Sum = 175; average = 175/5 = 35.
Q11. What is the average of the first 17 even natural numbers?
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Answer: B. 18
Sum = 17 × 18 = 306; average = 18.
Q12. Find the average of 96, 46, 94, 72.
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Answer: D. 77
Sum = 308; average = 308/4 = 77.
Q13. What is the average of the first 19 even natural numbers?
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Answer: B. 20
Sum = 19 × 20 = 380; average = 20.
Q14. Find the average of 67, 95, 23, 11, 54.
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Answer: C. 50
Sum = 250; average = 250/5 = 50.
Q15. What is the average of the first 38 even natural numbers?
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Answer: C. 39
Sum = 38 × 39 = 1482; average = 39.
Q16. What is the average of the first 57 odd natural numbers?
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Answer: C. 57
Sum = 57² = 3249; average = 3249/57 = 57.
Q17. Find the average of 58, 19, 26, 41, 41, 91.
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Answer: A. 46
Sum = 276; average = 276/6 = 46.
Q18. What is the average of the first 57 even natural numbers?
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Answer: A. 58
Sum = 57 × 58 = 3306; average = 58.
Q19. Find the average of 92, 86, 64, 16, 77, 97.
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Answer: D. 72
Sum = 432; average = 432/6 = 72.
Q20. What is the average of the first 60 odd natural numbers?
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Answer: B. 60
Sum = 60² = 3600; average = 3600/60 = 60.
Q21. Find the average of 40, 44, 70, 35, 80, 85.
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Answer: B. 59
Sum = 354, count = 6, average = 354/6 = 59.
Q22. Find the average of 80, 36, 14, 69, 89, 18.
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Answer: D. 51
Sum = 306, count = 6, average = 306/6 = 51.
Q23. The average age of 30 students in a class is 39 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: C. 70 years
Teacher's age = (30 + 1) × 40 − 30 × 39 = 1240 − 1170 = 70 years.
Q24. The average age of 40 students in a class is 51 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: A. 92 years
Teacher's age = (40 + 1) × 52 − 40 × 51 = 2132 − 2040 = 92 years.
Q25. The average age of 40 students in a class is 26 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: D. 67 years
Teacher's age = (40 + 1) × 27 − 40 × 26 = 1107 − 1040 = 67 years.
Q26. The average age of 30 students in a class is 27 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: A. 58 years
Teacher's age = (30 + 1) × 28 − 30 × 27 = 868 − 810 = 58 years.
Q27. The average age of 25 students in a class is 45 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: B. 71 years
Teacher's age = (25 + 1) × 46 − 25 × 45 = 1196 − 1125 = 71 years.
Q28. The average age of 20 students in a class is 60 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: B. 81 years
Teacher's age = (20 + 1) × 61 − 20 × 60 = 1281 − 1200 = 81 years.
Q29. The average age of 20 students in a class is 46 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: B. 67 years
Teacher's age = (20 + 1) × 47 − 20 × 46 = 987 − 920 = 67 years.
Q30. The average age of 20 students in a class is 30 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: B. 51 years
Teacher's age = (20 + 1) × 31 − 20 × 30 = 651 − 600 = 51 years.
Q31. A batsman has an average of 50 runs after 13 innings. How many runs must he score in the next innings to raise his average by 1?
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Answer: C. 64
New total = 14 × 51 = 714; old total = 13 × 50 = 650. Runs = 64.
Q32. The average age of 20 students in a class is 58 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: A. 79 years
Teacher's age = (20 + 1) × 59 − 20 × 58 = 1239 − 1160 = 79 years.
Q33. A batsman has an average of 34 runs after 12 innings. How many runs must he score in the next innings to raise his average by 3?
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Answer: A. 73
New total = 13 × 37 = 481; old total = 12 × 34 = 408. Runs = 73.
Q34. A batsman has an average of 53 runs after 18 innings. How many runs must he score in the next innings to raise his average by 1?
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Answer: C. 72
New total = 19 × 54 = 1026; old total = 18 × 53 = 954. Runs = 72.
Q35. The average age of 10 students in a class is 22 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: C. 33 years
Teacher's age = (10 + 1) × 23 − 10 × 22 = 253 − 220 = 33 years.
Q36. A batsman has an average of 36 runs after 13 innings. How many runs must he score in the next innings to raise his average by 1?
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Answer: D. 50
New total = 14 × 37 = 518; old total = 13 × 36 = 468. Runs = 50.
Q37. A batsman has an average of 59 runs after 12 innings. How many runs must he score in the next innings to raise his average by 4?
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Answer: B. 111
New total = 13 × 63 = 819; old total = 12 × 59 = 708. Runs = 111.
Q38. The average age of 10 students in a class is 40 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age?
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Answer: C. 51 years
Teacher's age = (10 + 1) × 41 − 10 × 40 = 451 − 400 = 51 years.
Q39. A batsman has an average of 60 runs after 19 innings. How many runs must he score in the next innings to raise his average by 2?
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Answer: A. 100
New total = 20 × 62 = 1240; old total = 19 × 60 = 1140. Runs = 100.
Q40. Find the average of 40, 31, 59, 81, 58, 29, 52.
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Answer: D. 50
Sum = 350, count = 7, average = 350/7 = 50.
Q41. Find the average of 27, 31, 76, 72, 48, 39, 64.
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Answer: D. 51
Sum = 357, count = 7, average = 357/7 = 51.
Q42. The average of 5 consecutive even numbers is 84. What is the largest of these numbers?
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Answer: A. 88
The middle (3th) number is 84. The largest is 2 steps of 2 above it: 84 + 4 = 88.
Q43. The average of 11 consecutive even numbers is 40. What is the largest of these numbers?
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Answer: A. 50
The middle (6th) number is 40. The largest is 5 steps of 2 above it: 40 + 10 = 50.
Q44. The average of 5 consecutive even numbers is 46. What is the largest of these numbers?
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Answer: A. 50
The middle (3th) number is 46. The largest is 2 steps of 2 above it: 46 + 4 = 50.
Q45. The average of 11 consecutive even numbers is 112. What is the largest of these numbers?
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Answer: A. 122
The middle (6th) number is 112. The largest is 5 steps of 2 above it: 112 + 10 = 122.
Q46. The average of 9 consecutive even numbers is 62. What is the largest of these numbers?
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Answer: C. 70
The middle (5th) number is 62. The largest is 4 steps of 2 above it: 62 + 8 = 70.
Q47. The average of 9 consecutive even numbers is 60. What is the largest of these numbers?
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Answer: A. 68
The middle (5th) number is 60. The largest is 4 steps of 2 above it: 60 + 8 = 68.
Q48. A batsman has an average of 39 runs after 17 innings. How many runs must he score in the next innings to raise his average by 2?
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Answer: B. 75
New total = 18 × 41 = 738; old total = 17 × 39 = 663. Runs = 75.
Q49. The average of 7 consecutive even numbers is 50. What is the largest of these numbers?
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Answer: B. 56
The middle (4th) number is 50. The largest is 3 steps of 2 above it: 50 + 6 = 56.
Q50. A batsman has an average of 39 runs after 19 innings. How many runs must he score in the next innings to raise his average by 3?
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Answer: D. 99
New total = 20 × 42 = 840; old total = 19 × 39 = 741. Runs = 99.
Q51. A batsman has an average of 52 runs after 14 innings. How many runs must he score in the next innings to raise his average by 1?
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Answer: B. 67
New total = 15 × 53 = 795; old total = 14 × 52 = 728. Runs = 67.
Q52. The average of 7 consecutive even numbers is 62. What is the largest of these numbers?
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Answer: C. 68
The middle (4th) number is 62. The largest is 3 steps of 2 above it: 62 + 6 = 68.
Q53. A batsman has an average of 37 runs after 14 innings. How many runs must he score in the next innings to raise his average by 4?
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Answer: D. 97
New total = 15 × 41 = 615; old total = 14 × 37 = 518. Runs = 97.
Q54. A batsman has an average of 55 runs after 13 innings. How many runs must he score in the next innings to raise his average by 4?
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Answer: C. 111
New total = 14 × 59 = 826; old total = 13 × 55 = 715. Runs = 111.
Q55. The average of 5 consecutive even numbers is 42. What is the largest of these numbers?
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Answer: C. 46
The middle (3th) number is 42. The largest is 2 steps of 2 above it: 42 + 4 = 46.
Q56. A batsman has an average of 43 runs after 20 innings. How many runs must he score in the next innings to raise his average by 3?
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Answer: A. 106
New total = 21 × 46 = 966; old total = 20 × 43 = 860. Runs = 106.
More Quantitative Aptitude topics
- Speed, Time and Distance 69
- Percentage 58
- Profit and Loss 49
- Number System 47
- Mensuration 46
- Simple Interest 43
- Time and Work 41
- LCM and HCF 39
- Ratio and Proportion 38
- Problems on Ages 38
- Compound Interest 36
- Algebra 33
- Simplification 32
- Geometry 29
- Discount 24
- Partnership 17
- Boats and Streams 16
- Mixture and Alligation 13
- Indices and Surds 10
- Trigonometry 10
- Statistics 9
- Pipes and Cisterns 7