Using ________ order we can delete tree nodes in such a way that a child node is deleted before its parent

Using ________ order we can delete tree nodes in such a way that a child node is deleted before its parent

  1. a) Pre
  2. b) Post
  3. c) In
  4. d) Level

From the BCS Technical Cadre (CSE) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 52 of 123.

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