If you know the answer to every question the difficulty of getting a zero is equivalent to getting a 100. So it's still not a more difficult accomplishment to get a 0.
It's highly unlikely, but not impossible. Just because someone got 0 could indicate they did it on purpose, but also, they might just have been phenomenally unlucky with all their guesses.
With only 20 questions with 4 possible answers, you only have 0,3% chances of getting a 0/20. A 5 possible answers 40 questions drops to 0,01%. It's more likely that something's going on than someone being THAT unlucky.
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u/Ghostley92 19d ago
But if you know every question and are NOT guessing randomly, it is not.