UPSC Prelims 2017·CSAT·Logical Reasoning·Arrangement and Puzzles

In a school, there are five teachers A, B, C, D and E. A and B teach Hindi and English. C and B teach English and Geography. D and A teach Mathematics and Hindi. E and B teach History and French. Who teaches maximum numb, of subjects?

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Last updated 23 May 2026, 3:31 pm IST
  1. AA
  2. BBCorrect
  3. CD
  4. DE

Explanation

Step-by-step analysis: 1. A and B teach Hindi and English. * A: {Hindi, English} * B: {Hindi, English} 2. C and B teach English and Geography. * C: {English, Geography} * B: {Hindi, English, Geography} (English is already counted for B) 3. D and A teach Mathematics and Hindi. * D: {Mathematics, Hindi} * A: {Hindi, English, Mathematics} (Hindi is already counted for A) 4. E and B teach History and French. * E: {History, French} * B: {Hindi, English, Geography, History, French} Counting unique subjects for each teacher: * A teaches: Hindi, English, Mathematics (3 subjects) * B teaches: Hindi, English, Geography, History, French (5 subjects) * C teaches: English, Geography (2 subjects) * D teaches: Mathematics, Hindi (2 subjects) * E teaches: History, French (2 subjects) Comparing the counts, B teaches the maximum number of subjects (5). The final answer is B.
Logical Reasoning: In a school, there are five teachers A, B, C, D and E. A and B teach Hindi and English. C and B teach English and Geogra

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