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Clock Opposite Direction

Clock Opposite Direction problems ask: given a clock hour representing a direction, which clock hour represents the opposite direction? Since 12=North, the opposite of North is South at 6 o'clock. Similarly, the opposite of East (3) is West (9). These problems test your understanding of opposite direction relationships on a clock face.

10Worksheets
200+Practice Questions
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1-2 hoursHours to Master

What You'll Learn

Introduction & Overview Why This Matters How to Solve Pro Tips & Tricks
Shortcut Methods Common Mistakes Practice Worksheets Exam Importance

Introduction to Clock Opposite Direction

Clock Opposite Direction problems ask: given a clock hour representing a direction, which clock hour represents the opposite direction? Since 12=North, the opposite of North is South at 6 o'clock. Similarly, the opposite of East (3) is West (9). These problems test your understanding of opposite direction relationships on a clock face.

Prerequisites

Clock direction mapping (12=N, 3=E, 6=S, 9=W) Opposite direction pairs (N↔S, E↔W, NE↔SW, SE↔NW) 180° rotation concept Clock arithmetic (adding 6 hours mod 12)
Why This Matters: Clock Opposite Direction problems appear in 1-2 questions in SSC CGL and Banking PO exams. They test direction reversal concepts.

How to Solve Clock Opposite Direction Problems

1

Step 1: Identify the given clock hour and its corresponding direction

2

Step 2: Determine the opposite direction

3

Step 3: Find which clock hour represents that opposite direction

4

Step 4: For cardinal directions: N(12)↔S(6), E(3)↔W(9)

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Step 5: For intercardinal directions: NE(1-2)↔SW(7-8), SE(4-5)↔NW(10-11)

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Step 6: Alternatively, add 6 hours to the given hour (mod 12)

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Step 7: The result is the opposite clock hour

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Step 8: Verify that the directions are opposite

Pro Strategy: The opposite direction is always 6 hours ahead (or behind) on the clock face. Add 6 to the given hour and reduce modulo 12 to find the opposite hour. For hours 7-12, subtracting 6 also works.

Example Problem

Example: If 2 o'clock represents Northeast, which clock hour represents the opposite direction (Southwest)? Solution: Step 1: Given: 2 o'clock = Northeast Step 2: Opposite of Northeast = Southwest Step 3: Southwest is represented by 8 o'clock (since 7-8 = SW quadrant) Step 4: Check: 2 + 6 = 8 o'clock Answer: 8 o'clock

Pro Tips & Tricks

  • Opposite of 12 (North) = 6 (South)
  • Opposite of 3 (East) = 9 (West)
  • Opposite of 6 (South) = 12 (North)
  • Opposite of 9 (West) = 3 (East)
  • Opposite of 1 (NE) = 7 (SW)
  • Opposite of 2 (NE) = 8 (SW)

Shortcut Methods to Solve Faster

Opposite hour = current hour + 6 (if result ≤12)
Opposite hour = current hour - 6 (if current hour >6)
For 12, opposite is 6; for 6, opposite is 12
The sum of opposite clock hours = 12 (with 12+12=24, so mod 12 gives 0)
Direction opposites: N↔S, E↔W, NE↔SW, SE↔NW

Common Mistakes to Avoid

Adding 3 hours instead of 6 for opposite direction
Forgetting that 12 + 6 = 18 mod 12 = 6 (not 18)
Confusing opposite with perpendicular (90°) directions
Thinking all opposite pairs differ by exactly 6 hours (they do, but careful with 12/6 handling)

Exam Importance

Clock Opposite Direction is an important topic for various competitive exams. Here's how frequently it appears:

SSC CGL
1-2 questions
BANKING PO
1-2 questions
RAILWAYS RRB
1-2 questions
CAT
0-1 questions
INSURANCE
1-2 questions

Ready to Master Clock Opposite Direction?

Start with Worksheet 1 and work your way up to expert level! Each worksheet includes:

20 practice questions
Detailed solutions
Step-by-step explanations
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