Reasoning Ability – Puzzles
Chandigarh PSC – Study Notes
1. What is a Puzzle?
A puzzle is a short story that gives you a set of facts and asks you to find the missing piece.
Think of it as a “toy box” problem: you have a few toys (people, objects, places) and a few rules.
Your job is to put the toys in the right spot.
Everyday Analogy – Imagine you are arranging four friends on a park bench.
Each friend has a favorite color of shirt, a favorite snack, and a favorite activity.
The puzzle gives you clues such as “the person in the blue shirt sits next to the one who likes pizza.”
You must decide who sits where, what they wear, and what they like.
2. Common Puzzle Types
| Type | How It Looks | What You Do |
|---|---|---|
| Arrangement | People or objects placed in a line, circle, or grid. | Decide who goes where. |
| Sequence | Things happen in a specific order (first, second, third, …). | Find the correct order. |
| Spatial (Position) | Objects are placed relative to each other (left/right, above/below). | Map the positions. |
| Logic Grid | Multiple attributes (e.g., name, color, city) and a grid to fill. | Cross‑out impossible pairs. |
| Number Pattern | Numbers follow a hidden rule (e.g., 2, 4, 8, 16). | Spot the rule. |
3. How to Approach a Puzzle
- Read the whole puzzle once – Don’t rush.
- Write down every clue – Use a simple table or list.
- List all options – For each item, write what it could be.
- Apply elimination – If a clue says “not A,” cross out A.
- Look for forced moves – If only one option fits, pick it.
- Check consistency – Make sure every clue still works after a choice.
- Repeat until all places are filled.
Tip – Treat each clue like a small “rule of thumb.”
When you find one rule that works, the rest usually fall into place.
4. Tiny Example
Puzzle
Four friends – A, B, C, D – sit in a row of four chairs.
Clues:
- A sits next to B.
- C sits on the left end.
- D sits right of B.
- B is not in the middle.
Solution Steps
| Step | What we know |
|---|---|
| 1 | C is on the left end → C _ _ _. |
| 2 | A sits next to B → A and B are together. |
| 3 | D sits right of B → D is after B. |
| 4 | B is not in the middle → B is either 1st or 4th. |
- B cannot be 1st because C is 1st.
- B cannot be 4th because D must be right of B.
- Therefore B must be 2nd.
- A sits next to B → A can be 1st or 3rd.
- C is 1st, so A must be 3rd.
- D is right of B → D is 4th.
Answer:
C – B – A – D
5. Quick Practice Problems
-
Seating – Five people (P, Q, R, S, T) sit in a row.
- P is not at either end.
- R sits next to Q.
- S sits to the right of T.
- Q sits to the left of P.
Who sits in the middle?
-
Sequence – The numbers 2, 4, 8, 16, … follow a rule.
What is the 5th number?
(Hint: each number is the previous number × 2.)
6. Tips for the Chandigarh PSC Exam
- Practice daily – Even 10 minutes a day builds pattern recognition.
- Time yourself – Aim for 2–3 minutes per puzzle.
- Use a pencil – You can erase mistakes easily.
- Check for contradictions – If a choice breaks a clue, backtrack.
- Keep calm – A clear head sees patterns faster.
7. Summary
| Step | What to Do | Why It Helps |
|---|---|---|
| Read carefully | Capture every detail | Avoid missing clues |
| List clues | Organize info | Easier to see relationships |
| Eliminate | Remove impossible options | Narrows down choices |
| Force a move | Pick the only remaining option | Moves puzzle forward |
| Verify | Re‑check all clues | Ensures no mistake |
With these simple rules, you can tackle most puzzle questions on the Chandigarh PSC exam. Keep practicing, and the patterns will start to look familiar—just like arranging your favorite toys on a shelf!