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so... if I randomly choose from the four answers, there is a 50% chance I will choose B?A & D are the same answer, so the chances of "25%" being the correct answer is 50%, which contradicts their stated probabilities, so neither can be right.
That leaves B & C, and so since both are equally probable, means B is the only right answer
This assumption is incorrect. For example, take questions #6 and #17 of this test. B/D and D/B would seem to be correct answers for both questions, but there is only one correct answer for each question.*Let's suppose that A is the correct answer.
Then D is the correct answer also, since they state the same thing.
Are my assumptions wrong?
Is the solution wrong?