Q. Which collection does not allow duplicates?

  • (A) List
  • (B) Set
  • (C) Map
  • (D) Queue
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✅ Correct Answer: (B) Set
Explanation: Set does not allow duplicate elements.

Published by Roshan ⭐ 3.43K Points at 23-Apr-2026 06:00 am in JAVA

Explanation by: Roshan
Set does not allow duplicate elements.

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