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GATE Electrical Engineering (EE) 2022 Solved Paper

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Question : 1

Total: 65

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?

0
1/3
2/3
1

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