The figure below shows the front and rear view of a disc, which is shaded with…

GATE · 2022 · EE · General AptitudeGATE · 2022 · MA · General Aptitude

The figure below shows the front and rear view of a disc, which is shaded with identical patterns. The disc is flipped once with respect to any one of the fixed axes 1-1, 2-2 or 3-3 chosen uniformly at random.

What is the probability that the disc DOES NOT retain the same front and rear views after the flipping operation?

Paired discs captioned Front View and Rear View. Each disc has an unnumbered horizontal dashed diameter. Each has three hatched sectors: the upper-left sector between the left horizontal radius and the upper-left diagonal has vertical hatching; the upper-right sector between the right horizontal radius and the upper-right diagonal has horizontal hatching; the bottom sector between the two lower diagonals has horizontal hatching and spans across the downward vertical radius. The remaining sectors are white. Both have vertical dashed axis endpoints labelled 1. Front rising diagonal endpoints 2, falling diagonal endpoints 3; Rear rising diagonal endpoints 3, falling diagonal endpoints 2. All dashed axes, both copies of all numeric labels, closed circular contours, and captions retained.
  1. A.

    0

  2. B.

    1/3

  3. C.

    2/3

  4. D.

    1

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