Question:

Which of the following statements is definitely true?

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For “definitely true” questions, use only established facts. Eliminate any option that assumes performance in subjects where no data is given, and reject statements contra- dicted by known sets.
Updated On: Aug 11, 2025
  • Y and W are good in English as well as in Hindi
  • All four friends are good in Science
  • W is good in Social Studies, Hindi and Science
  • Y is not good in Mathematics, Hindi and Social Studies
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The Correct Option is B

Solution and Explanation

Good in English = Y, Z; hence W /∈ English.
Also given: Good in Science = W, X, Y, Z (i.e., all four).

Check each option:
(a) Requires W to be good in English, but W is not in the English set ⇒ (a) is false.
(b) Matches the Science set exactly: W, X, Y, Z ⇒ (b) is true.
(c) Science holds for W , but we have no confirmed data that W is good in Social Studies and
Hindi ⇒ not definitely true.
(d) A three-subject not-good claim about Y (Mathematics, Hindi, Social Studies) is unsupported by the facts ⇒ not definitely true.

Therefore, only (b) is definitely true.

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