is parameterized as follows: - **First digit ($M = 4$)**: Maximum camber in percent of chord $\\implies 4\\% c = 0.04c$. - **Second digit ($P = 4$)**: Position of maximum camber in **tenths** of chord from the leading edge $\\implies 4 \\times 0.1c = 0.40c$. - **Last two digits ($XX = 15$)**: Maximum thickness in percent of chord $\\implies 15\\% c = 0.15c$. 2. **Evaluation**: The location of maximum camber is given by the second digit ($P = 4$), which translates to $0.40$ (or $40\\%$ of chord length). **3. Comprehensive Options & Distractor Analysis**: - **(A) 0.44**: ❌ **INCORRECT**. Erroneously combines the first two digits. - **(B) 0.40**: ✅ **CORRECT**. The second digit '4' denotes maximum camber position at $40\\%$ chord ($0.40c$). - **(C) 0.15**: ❌ **INCORRECT**. This is the maximum thickness fraction ($15\\% c$) given by the last two digits. - **(D) 0.04**: ❌ **INCORRECT**. This is the maximum camber magnitude ($4\\% c$) given by the first digit. **4. Official Master Key & Exam Takeaway**: - **Official Answer Key**: **B** - **Exam Takeaway**: Never confuse the first digit (camber magnitude, $0.04c$) with the second digit (camber location, $0.40c$). The last two digits always represent maximum profile thickness ($0.15c$).", "url": "https://723e778c.gate-ae-prep-portal.pages.dev/pyq/gate-ae-2025-q18#solution" } } }