Humpty Dumpty sits on a wall every day while having lunch. The wall sometimes breaks. A person
sitting on the wall falls if the wall breaks.
Which one of the statements below is logically valid and can be inferred from the above sentences?
Options:
(A) Humpty Dumpty always falls while having lunch
(B) Humpty Dumpty does not fall sometimes while having lunch
(C) Humpty Dumpty never falls during dinner
(D) When Humpty Dumpty does not sit on the wall, the wall does not break
% D
Biotechnology
Number of Questions:
55
Section Marks:
85.0
Q. 11 to Q.35 carry 1 mark each & Q.36 to Q.65 carry 2 marks each.
Official Answer Key:
B
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2015 Q.10)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: GA
- **Question Type**: **MCQ** (2 Marks)
- **Core Topic**: Quantitative & Analytical Aptitude
**2. Detailed Step-by-Step Analytical & Scientific Derivation**:
- **Systematic Conceptual & Option-by-Option Evaluation**:
- Problem Focus: *"Humpty Dumpty sits on a wall every day while having lunch. The wall sometimes breaks. A person
sitting on the wall falls if the wall breaks.
Which one of the statements below is logically valid and can be inferred from t..."*
- **Option (B) [CORRECT]**: *"Humpty Dumpty does not fall sometimes while having lunch"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (A) [INCORRECT]**: *"Humpty Dumpty always falls while having lunch"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"Humpty Dumpty never falls during dinner"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (D) [INCORRECT]**: *"When Humpty Dumpty does not sit on the wall, the wall does not break
Option"* does not satisfy the precise boundary conditions or molecular specificity.
**3. Final Answer / Verification Summary**:
- **Official GATE Answer Key**: **B**
- **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).
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