The Legendary Janitor
Most people don't choose reincarnation. Reincarnation finds their way to them. Perhaps they did something great in their life. Or maybe truck-sama wasn't looking where it was going. But without fail, those who reincarnate are destined for something great. A new life where everything changes for the better. But... Reincarnation isn't always the greatest thing. Sometimes you just draw the short end of the stick. Di Tou just happens to have drawn the shortest stick. Pulled out of his life randomly. Taken by a crazy old eccentric man not as a disciple, but as a body double?! And a janitor body double no less?! Grasping a system to find... It's a JANITOR SYSTEM!? Truly, how unlucky can one get?
Hidden Trick
If one were to take the rules of the trial at face value, it could be interpreted as, "There are three sets of questions. One set each day. If you answer a single question correctly in any of the sets, you pass." With such a thought process, one wanted to maximize the time you had in each day, so you had the most time to mull over every question. In the first two days you could be bold and answer randomly, while on the third day you had to treasure every moment being careful about each and every question available.
It created the pressure a student felt when they had a test booklet the size of a brick, and only 'one hour' to answer it all. Although many of the questions in the beginning might be multiple choice questions, the important questions were all essays in the back, and time management was just as crucial as knowing the material of the test itself.