Anyone who chooses to do this problem will not get the correct answer. The problem itself is a changeable trap. The only right choice is not to choose. Because there are many uncertainties here, "When exactly?" "The rest refers to burning or not burning? Or both? " "Xiao Ming, did you light it again after the candle blew out? If yes, is it renewed twice or only once? How many points? " Such a combination, 0 to 8 is possible.

The person who chooses 0 thinks that Xiao Ming will order again after closing the window, and the last eight will be burned, so there is only 0 left. If you choose 3, the time after Xiao Ming closed the window is "last", indicating how many candles are left; Those who choose five candles must not light the ones that have just been blown out after Xiao Ming closes the window, and only those three will burn out in the end. The person who chooses eight thinks that the "last" here is the moment after Xiao Ming closes the window. How many candles (both burning and unlit) are there? Most students will choose three of these questions. When you grow up, people's minds become more complicated and there are more things to consider, so there will be many choices. The topic itself is a trap, there is no correct answer, and the different choices of the problem solver are only different ways of thinking. Whether you choose 0 or 3, which is slightly complicated in thinking transformation, it is not right, but it is not wrong. This is not an arithmetic problem, but a psychological test. The only correct answer is to think outside the box and choose none. If you add 1, 2, 4, 6, 7 to the options, it will be more complicated, because it depends on Xiao Ming again. This reasoning will become more and more unreasonable.