RRB Group D Reasoning Clock Questions For Railway Exams 2026 By Deepak Sir

Preparing for the RRB Group D exam requires a solid grasp of logical patterns. One of the most important topics in the syllabus is the Reasoning Clock. Many students find these questions tricky, but once you learn the basic formulas, they become very easy to solve.

Clock questions are an important part of the reasoning section in railway exams. These problems test clarity of concepts and calculation accuracy. Students are often asked to find angles between clock hands or determine the exact time when a specific position is formed.

A clear understanding of Reasoning Clock helps reduce calculation errors. These questions are scoring if the concepts are strong. No shortcuts are required. Only basic logic and regular practice are enough.

Structure of a Clock

Before solving questions, it is important to understand the clock face.

• A clock has 12 equal divisions

• Each division represents 5 minutes

• A full clock rotation equals 360 degrees

From this structure:

• One hour space = 30 degrees

• One minute space = 6 degrees

These values are the base of all Reasoning Clock calculations.

Also Read: Railway RRB Calendar 2026

Movement of Clock Hands

The two hands move at different speeds.

• The minute hand moves 6 degrees per minute

• The hour hand moves 0.5 degrees per minute

Due to this speed difference, angles keep changing every minute. Most Reasoning Clock questions depend on this movement pattern.

How to Find the Angle Between Clock Hands?

The Reasoning Clock concept is based on the movement of the hour hand and the minute hand. To find the angle between these two hands, you must remember that the clock is a circle of 360°. Each minute on a clock represents an angle of 6°.

A common formula used in Reasoning Clock problems is:

In this formula, m stands for minutes and h stands for hours. This helps you find the exact position of the hands at any given time.

Important Concepts: 0° and 180° Angles

In Reasoning Clock lessons, you will often hear about "overlapping" and "straight lines."

• 0° Angle (Overlapping): The hands of a clock overlap 22 times in a 24-hour period.

• 180° Angle (Straight Line): The hands form a straight line (pointing in opposite directions) 11 times every 12 hours. In a full day, this happens 22 times.

Understanding these frequencies is a vital part of mastering the Reasoning Clock.

How to Calculate 180° Angles?

To find exactly when the hands form a 180° angle, you can use the "reverse time" method. For example, the reverse of 7 is 1, and the reverse of 8 is 2. The formula for the Reasoning Clock 180° timing is:

Using this method, you can quickly solve complex questions during your RRB Group D exam.

Straight Line Concept in Clock Questions

The term “straight line” often creates confusion.

A straight line position can mean:

• 0° angle (hands together)

• 180° angle (hands opposite)

So, in 24 hours:

• 0° angle → 22 times

• 180° angle → 22 times

Total straight line positions = 44 times

Reverse of an Hour Explained

The reverse of an hour is the number opposite to it on the clock.

Examples:

• Reverse of 7 = 1

• Reverse of 8 = 2

• Reverse of 9 = 3

• Reverse of 10 = 4

• Reverse of 11 = 5

• Reverse of 6 = 12 (treated as 0)

This concept simplifies reverse angle calculations in Reasoning Clock questions.

Minute Gap-Based Clock Questions

Some questions give the gap between hands in minutes instead of degrees.

Key rule:

• 1 minute gap = 6 degrees

So:

• 5 minutes gap = 30 degrees

• 3 minutes gap = 18 degrees

These conversions are necessary before applying formulas in Reasoning Clock problems.

General Formula for Gap-Based Questions

The universal angle formula is:

Angle = | (11/2 × M) − (30 × I) |

Where:

• M = minutes

• I = initial hour

Except for 0° and 180°, every angle occurs twice in one hour. This rule helps solve most Reasoning Clock questions accurately.

Practice MCQs on Clock Reasoning (RRB Group D)

These questions are designed to help students practice important clock-based reasoning concepts. These questions reflect the level and pattern commonly seen in RRB Group D examinations.

MCQ 1

How many degrees does the minute hand move in one minute?
A. 3°
B. 5°
C. 6°
D. 30°

Answer: C. 6°

MCQ 2

How many times do the clock hands overlap in 12 hours?
A. 10 times
B. 11 times
C. 12 times
D. 22 times

Answer: B. 11 times

MCQ 3

How many times do the clock hands form a 180° angle in 24 hours?
A. 11 times
B. 12 times
C. 22 times
D. 44 times

Answer: C. 22 times

MCQ 4

What is the total number of straight-line positions formed by clock hands in 24 hours?
A. 22
B. 33
C. 44
D. 48

Answer: C. 44

MCQ 5

At what angle are the clock hands at 3:00 exactly?
A. 30°
B. 60°
C. 90°
D. 180°

Answer: C. 90°

MCQ 6

What is the angle between the hands at 6:00?
A. 0°
B. 90°
C. 120°
D. 180°

Answer: D. 180°

MCQ 7

How many degrees does the hour hand move in one minute?
A. 0.5°
B. 1°
C. 5.5°
D. 6°

Answer: A. 0.5°

MCQ 8

If the gap between the clock hands is 5 minutes, what is the angle between them?
A. 18°
B. 24°
C. 30°
D. 36°

Answer: C. 30°

MCQ 9

The reverse of hour 9 on a clock is:
A. 1
B. 2
C. 3
D. 4

Answer: C. 3

MCQ 10

Between which two hours does the 180° angle occur exactly at 6:00?
A. 4 and 5
B. 5 and 6
C. 6 and 7
D. Both B and C

Answer: D. Both B and C

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