DP Reasoning – Paper Folding & Cutting (Delhi Police)

Delhi Police Constable

🎙 Introduction / परिचय

Paper Folding & Cutting में कागज़ को मोड़कर उस पर कट/छेद किये जाते हैं और अंत में खोलने पर pattern कैसा दिखेगा — यह पहचानना होता है। Delhi Police exam में हमेशा आसान symmetry-based questions पूछे जाते हैं।

✔ Key Rules / मुख्य नियम

1. Fold creates symmetry (प्रतिबिंब).
2. Cut multiplies depending on folds (fold × fold × cut).
3. Horizontal fold → vertical reflection.
4. Vertical fold → horizontal reflection.
5. Diagonal fold → diagonal symmetry.

Tip: Folding = Mirror Image, Cutting = Replication.

✔ Solved Examples (Delhi Police Pattern)

Example 1:
Paper folded once vertically, one cut on top-right corner. When opened? → Cut will appear on both top corners (mirror reflection). Answer: Two symmetric cuts

Example 2:
Paper folded twice (vertical + horizontal), one cut in folded corner. When opened? → 4 total cuts appear symmetrically. Answer: 4 cuts

Example 3:
Single diagonal fold → one cut. When opened, cut appears in opposite diagonal region. Answer: Two diagonal cuts

Example 4:
Horizontal fold only, shape punched at bottom centre. When opened → shape appears at top & bottom (mirror). Answer: Two identical shapes

Example 5:
No fold, 2 cuts made. Opened: remains the same. Answer: 2 cuts

✔ Practice MCQs

Paper folded once vertically. One cut on bottom-left. When opened? Ans: Two bottom cuts (left & right).
Paper folded twice. One cut on folded corner. Ans: 4 cuts appear.
Diagonal fold, one punch. Ans: Two diagonal symmetric punches.
Paper folded horizontally. One star shape cut on top side. Ans: Star appears at top & bottom.
Paper folded in half, triangle punched at centre. Ans: Two triangles.
Three folds, one cut. Ans: 8 cuts appear.
No fold, 5 cuts. Ans: 5 cuts.
Vertical fold, hole in centre. Ans: 2 identical holes left & right.
Horizontal fold, cut near bottom corner. Ans: 2 cuts in mirror.
Folded vertically twice, cut once. Ans: 4 cuts.

🔥 Challenge Question

Paper folded twice (vertical + horizontal). Two cuts made in folded corner. When opened?

Cuts multiply by 4 → 8 symmetric cuts.

Motivation: Paper Folding is the easiest non-verbal chapter — सिर्फ symmetry समझो → full marks! 🚓🔥

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