ISRO Computer Science (CSE) 2023 - Question 90

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Topic: Aptitude

Fact 1: Pictures can tell a story.
Fact 2: All storybooks have pictures.
Fact 3: Some storybooks have words.
If the first three statements are facts, which of the following statements must also be a fact?
I: Pictures can tell a story better than words can.
II: The stories in storybooks are very simple.
III: Some storybooks have both words and pictures.

  • A. I only
  • B. II only
  • C. III only
  • D. None of the statements is a known fact

Answer: C. III only

Explanation: Since all storybooks have pictures (Fact 2) and some storybooks have words (Fact 3), it logically follows that the storybooks that have words must also have pictures. Therefore, some storybooks have both (Statement III is true). Statements I and II introduce unsupported opinions.

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