And ~A and B ride opposite each other ~ Their speed is 1M/S (other numbers are also acceptable) ~ At first, when they started walking across 10m ~, there was a fly ~ ~ At 2M/ S (I also took this number casually ~), from A's car to B's car ~ and then from B's car to A's car ~ and then immediately.
This is from an article by a reader a few years ago ~ I can't remember the name of the mathematician ~ In fact ~ Primary school students should be able to solve these problems easily because they haven't learned much ~ But ~ You can tell him the reason of these stories at this time ~ I always think that interest is the most important thing ~ (I asked several children ~ One of the most handsome ones made me very happy ~ He said: That fly is boring.
There are some mathematical paradoxes: they are also interesting ~ but there is no answer ~ You should tell him in advance ~ I hope he can explore them himself ~
Say ~ three people go to dinner ~ after dinner ~ check out ~ 25 yuan ~ so one pays ten yuan ~ and then tips the waiter two yuan ~ and the other gets one yuan back ~ The problem is ~ so they only pay nine yuan ~ and then+give the waiter two yuan ~3*9+2=29 ~ and there is one yuan left to go there ~ (or that handsome guy ~ his answer is dripping).
Again ~ If a place asks you to tell the truth ~ If you lie, you can hit you ~ So an asshole makes trouble ~ The first sentence is ~ I'm here to call you ~ You say ~ Should I call ~ If I call, he will tell the truth ~ If I don't call, he will lie ~ Do you want to guess what the handsome guy said (thread ~)
If anyone below knows that this is what that bastard said, please tell the landlord ~ ~
Interest ~ ~ I always thought it was interest ~ ~ ~