Question:

No parrots are black. All crows are black. From the above premises, which one of the following conclusions is true?

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In syllogism problems, visualize sets with Venn diagrams to clearly see overlaps or exclusions.
Updated On: Aug 14, 2025
  • Some crows are not parrots.
  • No crows are parrots.
  • Some parrots are not crows.
  • No conclusion can be drawn.
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The Correct Option is B

Solution and Explanation

From the statements: 1. No parrots are black — This means parrots belong to the "non-black" group.
2. All crows are black — This means all crows belong to the "black" group.
Since parrots and crows belong to entirely separate color categories (black vs non-black), there can be no overlap between the two groups.
Therefore, no crow can be a parrot.
Option (a) "Some crows are not parrots" is true but weaker — the stronger conclusion is "No crows are parrots".
Option (c) "Some parrots are not crows" is also true but not the most direct conclusion.
Option (d) "No conclusion" is incorrect because a definite conclusion exists.
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