RRB NTPC Graduate Tier 1

2025

Shift-3

Algebra 2

All Questions 2 Exponents and Powers 1 Polynomials 1

Analogy 7

All Questions 7 Letter Analogy 6 Number Analogy 1

Average 1

All Questions 1 Weighted Average 1

Blood Relations 1

All Questions 1 Coded Blood Relations 1

Books and Authors 1

All Questions 1 Contemporary Literature 1

Classification 1

All Questions 1 Letter Classification 1

Coding-Decoding 3

All Questions 3 Alphanumeric Coding 1 Number Coding 2

Computer Knowledge 4

All Questions 4 Computer Architecture 1 Software Applications 3

Current Affairs 9

All Questions 9 Appointments 3 Economy and Banking 3 Sports 3

Defense and Security 3

All Questions 3 Defense Technology 3

Direction and Distance 3

All Questions 3 Direction and Distance 3

Economy 7

All Questions 7 Employment and Labor 1 Government Budgets 3 Poverty and Inequality 3

General Science 1

All Questions 1 Biology 1

Geography 4

All Questions 4 Agriculture & Irrigation 1 Tribes of India 3

Geometry 2

All Questions 2 Similar Triangles 1 Triangles 1

History 4

All Questions 4 Ancient History 1 Medieval History 3

Interest 4

All Questions 4 Compound Interest 1 Simple Interest 3

Mathematical Operations 1

All Questions 1 Sign Interchange 1

Mensuration 4

All Questions 4 Cylinder 3 Volume and Surface Area 1

Modern History 4

All Questions 4 Regional Rebellions 3 Tribal Uprisings 1

Number System 1

All Questions 1 Divisibility Rules 1

Percentage 2

All Questions 2 Expenditure and Savings 1 Percentage Word Problems 1

Polity 6

All Questions 6 Constitutional Remedies 3 Fundamental Rights 1 Judiciary 1 Local Government 1

Profit and Loss 2

All Questions 2 Basic Profit & Loss 1 Discount and Markup 1

Puzzle 1

All Questions 1 Ordering & Sequencing 1

Ranking 4

All Questions 4 Position/Rank 4

Ratio and Proportion 2

All Questions 2 Mean Proportion 1 Proportions 1

Seating Arrangement 3

All Questions 3 Circular Arrangement 3

Series 5

All Questions 5 Alphabetical Series 3 Alphanumeric Series 2

Simplification 1

All Questions 1 BODMAS Rule 1

Statistics 1

All Questions 1 Mean, Median, Mode 1

Time and Work 5

All Questions 5 Pipes and Cisterns 2 Work Efficiency 3

Trigonometry 1

All Questions 1 Trigonometric Identities 1

Average

Weighted Average

EN हिंदी

✕

RRB NTPC Graduate Tier 1 2025 Shift-3 📅 06 Jun, 2025

A class of 30 students appeared in a test. The average score of 12 students is 60, and that of the rest is 60. What is the average score of the class?

A

60

B

61

C

59

D

58

Result Summary

APEDIA

RRB NTPC Graduate Tier 1

2025 • 06 Jun, 2025 • Shift-3

A class of 30 students appeared in a test. The average score of 12 students is 60, and that of the rest is 60. What is the average score of the class?

Correct Answer

60

Understanding Group Averages: The problem divides the class of 30 students into two groups: a group of 12 students and a 'rest' group of $30 - 12 = 18$ students......

💡 Analysis & Explanation

Understanding Group Averages ▼

The problem divides the class of 30 students into two groups: a group of 12 students and a 'rest' group of $30 - 12 = 18$ students.

Uniformity of Scores ▼

We are given that the average score of the first group is 60. Remarkably, the average score of the remaining group is also given as exactly 60.

Property of Means ▼

When two or more subsets of a population all share the exact same average value, the overall average of the combined population will remain identical to that shared average. There's no need for complex weighted sum calculations.

Conclusion ▼

Since both subsets average 60, the average score of the entire class is inherently 60.