Recently, I brushed up on a so-called college exam question, and there are 1, 3, 5, 2, and 4 in the nine-square grid, and I asked what to fill in the blank. There was a lot of noise in the comment area, some people said 8, some people guessed 0, and some people ridiculed "fill in IQ 140"

At first, I also followed the habitual thinking, thinking that 1, 3, and 5 are odd increments, and 2 and 4 are even increments, so I should definitely fill in 6.

But the title clearly says that you don't fill in 6, you have to change your thinking.

I thought about several directions, but the shape of the numbers, the number of letters, and so on, were all wrong. Until I suddenly thought of the manual transmission car gears in life - 1, 3, 5 is the forward gear, 2, 4, R is the reverse gear, this layout is the same as the nine-square grid in the title!

You see, the gear arrangement of the manual transmission car: 1, 3, 5 in the first row, 2, 4, R in the second row. The space in the question corresponds to the "R" in the reverse gear.

This question is not a mathematical law question at all, it is a brain teaser to test the common sense of life!

There are many things like this in life, it's useless to stare in one direction, change the angle, combined with the common news, and the answer will come out. Just like this question, jump out of the inertia of digital addition and subtraction, think of the car gear, and solve it at once. Next time you encounter a problem, don't worry about the horns, think about the scenes in life, maybe there will be unexpected gains~

(In fact, this question is a trap set by using the manual gear layout, combining numbers with common sense of life, which is quite interesting, have you guessed it)