Originally Posted by

**Plato** No they are not different. They are exactly the same question.

Like $5$ in the question I posed, $25\%$ serves the exact same role.

The question is "What is the probability that a randomly chosen response is correct?"

Here is the OP.

Now regardless of the distractors, if there are four different ones then then there is a $25\%$ chance of being correct if one is correct.

If as in this example (& mine) there are two correct options, then the correct answer to the question "What is the probability of a random correct answer?" is $50\%$.

In other words, this is a question about careful reading. You failed it.

This question has been given to several generations of hopeful editors.

I will admit that in this form there is a self-reference that I have never seen.

But that does not change the object of the question.