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In an examination 38% of students fail in English and 61% pass in Urdu and 23% fail in both. Find the actual failure percentage?

Correct answer: C. 54%

  • A. 46%
  • B. 61%
  • C. 54%
  • D. 70%

Explanation

English failure is 38%, while Urdu failure is 100% - 61% = 39%. Using the union rule, actual failure in at least one subject is 38% + 39% - 23% = 54%, because those failing both were counted twice. The likely mistake is adding 38% and 39% without subtracting the 23% overlap and choosing 70%.

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