Interview Question for Software Tester/Quality Assurance at Epic:

F. none of the above

Maybe I'm having a bad day, but I don't get why F. is the answer.

Glassdoor reformatted the question layout. You need to imagine that the answers are written vertically (A is on top, B is beneath A, C is beneath B, and so on...). Then you must go through the answers logically. A (all of the below) cannot be correct because B is below A, and B states that none of the below are correct. This is a contradiction. B (none of the below) cannot be true, because, if it was, than A would be true and we just disproved that. C (all of the above) cannot be true, because neither A nor B is true. D (one of the above) cannot be true, because neither A, B, nor C is true. E (none of the above) is not correct, because this mean that F (none of the above) is also true. This would be yet another contradiction. Therefore, the only correct answer could be F (none of the above).

I believe it's E, not F.

If A is true, B has to be true - contradiction.
If B is true, D is also true - contradiction.
If C is true, A and B have to be true, but they are not.
D can't be true because we already ruled out all of those above D.
(skip E)
F can't be true because E would also be true, which contradicts F.
(back to E)
E may be true because we did rule out all of the above. And if E is true then F is false, which is also consistent.

This is incorrect. E only states that the letters above are incorrect, but does not disprove F. Thus, E also includes F as a true statement. However, F disproves the truth of E. Therefore the only answer does that is not contradicted by anything else is F.

If E is true, then F must be false because E is above F, so it does disprove F.
And if F is true then E must also be true, but that contradicts F, so F cannot be true.

Meyer. Believe whatever you want. This is a trick question to see how your brain works.

However, E only states "none of the above." This means that A-D are incorrect, but in no way does E reference F. It does not state "none of the the above or below," but just "none of the above." This means that F is still a possibility in a world where E is the correct answer. But if F is a possibility, E cannot be true. However, F also only states "none of the above." This includes A-E. If you don't know what the question is, the only answer that is not contradicted is F. F is different than E, because F has one conclusive answer where E has two possible answers.

That being said, don't think into this too much. Epic is a really lame company. You probably shouldn't bother with the application.

E doesn't say anything directly about F, but F says something about E. Namely, F asserts that E is false. If E is true, then we know that F is wrong. This is precisely the type of logic that a question like this attempts to evaluate. I said "I believe" to be polite. E is indeed the correct answer.