Which one of the following is true for Entropy?

Which one of the following is true for Entropy?

  1. a) Σᵢ Pᵢ log₂ Pᵢ
  2. b) -Σᵢ log₂ Pᵢ
  3. c) - Σᵢ Pᵢ log₂ Pᵢ
  4. d) None

From the BCS Technical Cadre (ICT) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 22 of 106.

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