Which of the following functions implements the Karnaugh map shown below?

GATE · 1999 · CS · Question 1 subparts

Which of the following functions implements the Karnaugh map shown below?

Karnaugh map with AB rows 00, 01, 11, 10 and CD columns 00, 01, 11, 10. Row 00 is 0, 0, 1, 0; row 01 is X, X, 1, X; row 11 is 0, 1, 1, 0; row 10 is 0, 1, 1, 0.
  1. A.

    A̅B + CD

  2. B.

    D(C + A)

  3. C.

    AD + A̅B

  4. D.

    (C + D)(C̅ + D)(A + B)

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