Landlord, you are killing people. I have seen the original picture of this problem. The explanation is to fill in the box. The correct answer is 2+ 13+ 15=30. Instead of filling in the box (below), add the word (below) and the problem will be solved. The above figures can be used repeatedly, including 2% of course, not 2%. A brain teaser seems to have to go to Harvard University to solve it.

It's not that hard. This question is an additional question in the final exam for Indian primary school students. It's simple, but you must see the problem clearly. You know, the probability of primary school students answering correctly is 2%, and the probability of college students answering correctly is one in ten thousand. Do you understand my new meaning?

It's not that difficult, it's simple, but you must see the topic clearly and see the loopholes in the topic clearly.