The RRB NTPC UG (Undergraduate) Exam 2025 will include a section on Mathematics where Average questions are a frequent part of the Quantitative Aptitude syllabus. Mastering this topic can significantly boost your overall score. This article provides an overview of the average chapter for RRB NTPC UG, along with Top 20 Most Expected Average Questions for 2025 with step-by-step solutions.
RRB NTPC UG Average Questions 2025
In the RRB NTPC UG Exam 2025, questions based on averages are commonly asked to assess numerical reasoning skills. These questions can range from basic average calculations to complex word problems involving age, marks, speed, and missing values. Practicing these concept-based questions helps candidates gain speed and accuracy in the exam.
Also Check: RRB NTPC UG Sports Questions 2025
RRB NTPC UG Average Questions 2025 Overview
The key highlights related to the RRB NTPC UG Average Question 2025 have been tabulated below. Practice the question provided below to score better in the upcoming exam.
| RRB NTPC UG Average Questions 2025 Overview | |
| Exam Name | RRB NTPC UG (Undergraduate) 2025 |
| Subject | Mathematics (Quantitative Aptitude) |
| Topic Covered | Average |
| Number of Expected Questions | 1 to 2 Questions (in CBT-1) |
| Difficulty Level | Easy to Moderate |
| Key Concepts | Average, Weighted Average, Missing Data, Mixtures |
| Importance | Frequently asked in every RRB NTPC exam |
Top 20 Most Expected Average Questions for RRB NTPC UG Exam 2025
Q1. Find the average of the first 10 natural numbers.
- 5 B. 6 C. 5.5 D. 6.5
Answer: C
Explanation: Sum = (n × (n + 1))/2 = (10 × 11)/2 = 55; Average = 55/10 = 5.5
Q2. The average of 5, 10, 15, and 20 is:
- 12.5 B. 13 C. 15 D. 11
Answer: A
Explanation: Total = 5 + 10 + 15 + 20 = 50; Average = 50/4 = 12.5
Q3. The average of 8 consecutive even numbers is 24. What is the largest number among them?
A. 28 B. 29 C. 31 D. 33
Answer: C
Explanation: Average = middle value. For 8 even numbers, largest = average + 7 = 31
Q4. The average age of 4 students is 18 years. A new student joins and the average becomes 19. What is the age of the new student?
- 20 B. 23 C. 24 D. 22
Answer: B
Explanation: Previous total = 4×18 = 72; New total = 5×19 = 95; New student’s age = 95 – 72 = 23
Q5. The average marks of 30 students are 60. One student’s marks were wrongly entered as 30 instead of 80. What is the correct average?
- 61 B. 61.67 C. 62 D. 60.5
Answer: B
Explanation: Error = +50; Correct total = 1800 + 50 = 1850; Average = 1850/30 = 61.67
Q5. The average marks of 30 students are 60. One student’s marks were wrongly entered as 30 instead of 80. What is the correct average?
- 61 B. 61.67 C. 62 D. 60.5
Answer: B
Explanation: Error = +50; Correct total = 1800 + 50 = 1850; Average = 1850/30 = 61.67
Q7. The average of 5 numbers is 27. If one number is excluded, the average becomes 25. Find the excluded number.
- 30 B. 35 C. 37 D. 40
Answer: C
Explanation: Total of 5 = 135; Total of 4 = 100; Excluded number = 135 – 100 = 35
Q8. A batsman has an average of 50 in 40 innings. How many runs should he score in the next innings to increase his average to 51?
- 91 B. 90 C. 100 D. 110
Answer: A
Explanation: Total runs = 40×50 = 2000; New total = 41×51 = 2091; Required = 2091 – 2000 = 91
Q9. The average of 7 numbers is 36. If the first 3 numbers average 32 and the last 3 average 39, what is the fourth number?
- 38 B. 35 C. 33 D. 36
Answer: A
Explanation: Total = 252; First 3 = 96; Last 3 = 117; Fourth = 252 – 96 – 117 = 39
Q10. A student scored an average of 55 marks in 4 subjects. To raise his average to 60, how many marks should he score in the fifth subject?
- 85 B. 60 C. 65 D. 80
Answer: D
Explanation: Current total = 220; Required total = 5×60 = 300; Needed = 300 – 220 = 80
Q11. The average weight of 8 persons increases by 2.5 kg when one person of 50 kg is replaced. What is the weight of the new person?
- 70 B. 65 C. 80 D. 75
Answer: D
Explanation: Increase = 8×2.5 = 20; New person = 50 + 20 = 70
Q12. The average marks of 15 students in a test is 75. Later it was found that one student’s marks were wrongly entered as 64 instead of 84. What is the correct average?
- 76.33 B. 76 C. 75.67 D. 75.33
Answer: C
Explanation: Error = +20; Correct total = 1125 + 20 = 1145; Average = 1145 / 15 = 76.33
Q13. The average temperature from Monday to Thursday is 28°C and from Thursday to Sunday is 30°C. If the temperature on Monday is 26°C and Sunday is 34°C, what is the temperature on Thursday?
- 30°C B. 32°C C. 31°C D. 29°C
Answer: A
Explanation:
Mon+Tue+Wed+Thu = 112
Thu+Fri+Sat+Sun = 120
Add both: Tue+Wed+Thu+Fri+Sat = 112 + 120 – Mon – Sun = 232 – 60 = 172
Now subtract Tue+Wed+Fri+Sat to isolate Thursday
Answer: 30°C
Q14. The average of 9 numbers is 45. The average of the first 5 is 42 and that of the last 3 is 48. Find the 6th number.
- 45 B. 50 C. 49 D. 51
Answer: C
Explanation: Total = 405; First 5 = 210; Last 3 = 144; Sixth = 405 – 210 – 144 = 51
Q15. The average of three numbers A, B, and C is 40. The average of B, C, and D is 50. If A = 20, find the value of D.
- 70 B. 80 C. 90 D. 60
Answer: C
Explanation:
A + B + C = 120 → B + C = 100
B + C + D = 150 → D = 150 – 100 = 50
Q16. The average of a group of 10 students is increased by 2 when a new student joins. What is the age of the new student?
- 22 B. 40 C. 32 D. 42
Answer: D
Explanation: Increase = 11×2 = 22; New student = 22 + (previous avg × 1) = 42
Q17. Average of 5 consecutive odd numbers is 49. What is the largest number?
- 53 B. 55 C. 57 D. 51
Answer: A
Explanation: In 5 odd numbers, middle number = average = 49, largest = 49 + 4 = 53
Q18. A cricketer has played 60 matches and has an average score of 45. If his highest and lowest scores are removed, the average becomes 44. What is the average of the highest and lowest score?
- 55 B. 65 C. 60 D. 70
Answer: C
Explanation:
Total = 60×45 = 2700
New total = 58×44 = 2552
Removed = 2700 – 2552 = 148
Average = 148/2 = 74
Q19. The average of 4 positive integers is 60. If the largest number is 40 more than the smallest, what can be the largest number?
- 80 B. 90 C. 100 D. 95
Answer: B
Explanation: Let smallest = x, largest = x + 40; Total = 240
Try values satisfying: x + (other two values) + (x+40) = 240
Answer: 90
Q20. The average of 6 numbers is 75. The average of the first two is 60, and the average of the next two is 80. What is the average of the last two numbers?
- 85 B. 90 C. 95 D. 100
Answer: B
Explanation: Total = 6×75 = 450
First two = 120; Middle two = 160
Remaining = 450 – 280 = 170
Average = 170/2 = 85
RRB NTPC UG Average Questions 2025 FAQs
Q1. Are average questions important for RRB NTPC UG 2025?+
Q2. What is the difficulty level of average questions in RRB NTPC UG 2025?+
Q3. How many average-based questions can be expected?+
Q4. What is the best way to practice for average-based questions?+
Q5. Most are formula-based but a few require logical analysis, especially error correction and assumed average types.+
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