Classic Question One dollar picked up

When I first saw this question, I was really stunned, thinking to myself if there was any secret to this question?

After thinking about it for a while, I finally found a bug in this question!

In fact, this question is not difficult, the difficult thing is to follow the idea of the questioner, so that the result is strange due to the confusion of thinking.

Next, let's put aside the question of what one yuan, starting from the topic itself: each person actually paid 9 yuan (first 10 yuan per person, and then 1 yuan per person was refunded), so the three people actually paid a total of 27 yuan. There's nothing wrong with that.

The key problem is that please note that the 2 yuan that the waiter hid is already included in the 27 yuan. In other words, of the 27 yuan, 25 yuan paid for the accommodation, and 2 yuan was hidden by the waiter. Therefore, 27 yuan plus 2 yuan is a meaningless equation, which is unreasonable, purely misleading, and causes confusion in thinking.

So, if you want to talk about the relationship between 27 yuan and 2 yuan, it is the relationship between 2 yuan and 27 yuan. It can be said that 27 yuan minus 2 yuan, that is the accommodation money, that is, 25 yuan. But in any case, it can't be said that 27 yuan plus 2 yuan.

2 yuan is already included in 27 yuan, what else to add? If you want to calculate back the original 30 yuan, it should be 27 yuan (actually paid by the three people) plus 3 yuan (refunded by the three people), which is the original 30 yuan.

**What's the problem of missing 1 yuan?

Haha, that's it, the problem has been solved. It turns out that the questioner is misleading us, so through this question, we can also find that we can't always think about the problem according to inertial thinking, but still have to seek solutions from the problem itself.

The waiter only refunded them 3 yuan and took 2 themselves, so they did pay 27 yuan, which is 25 yuan of the room fee plus 20 yuan taken by the waiter, and they still have 3 returned in their own hands, which together is exactly 30 yuan, and it is not less than 1 yuan.

Hehe, I hope you understand

The waiter refunded them a total of 3 yuan, and they embezzled 2, so they paid 27 yuan, which was 25 yuan for the room plus 2 yuan for the waiter's embezzlement, and they still had 3 yuan returned in their own hands, which together was exactly 30 yuan, and it was not less than 1 yuan.

This process can't be reversed, just like a store discount, 85% off, after the New Year, the original price will be changed, you can't multiply this discounted price by it, reverse to change the algorithm

What to do is said upstairs

That's the title, right?

There are 3 people to stay, 30 yuan a night.

The three of them each paid 10 yuan, and 30 yuan was handed over to the boss.

Later, the boss said that today's discount was only 25 yuan, and he took out 5 yuan and ordered the waiter to return it to them, and the waiter secretly hid 2 yuan, and then distributed the remaining 3 yuan to the three people, each of whom received 1 yuan.

In this way, at the beginning, each person paid 10 yuan, and now it is returned 1 yuan, that is, 10-1 = 9, and only 9 yuan per person, 9 yuan per person for 3 people, 3 x 9 = 27 yuan + 2 yuan hidden by the waiter = 29 yuan, and one yuan went to **???

Answer: The "3 x 9 = 27 yuan + 2 yuan hidden by the waiter = 29 yuan" in this question is actually a trap, because of the 27 yuan spent by each of the three people paying 9 yuan, 25 yuan was given to the shop owner, and 2 yuan was hidden by the waiter, in fact, it should be 3 x 9 = 27 yuan - 2 yuan hidden by the waiter = 25 yuan (paid to the boss).

The questioner took advantage of the difference between 29 and 30 yuan to confuse people, but in fact, the number of 29 yuan has no practical meaning.

One yuan is not less, just 30 yuan. 25 + three people, one yuan per person = 28 yuan, ten waiters 2 yuan = 30 yuan.

The algorithm logic is all wrong.

The boss received 25 + the waiter deducted 2 + returned 3 yuan = 30

27 is the money paid - the waiter deducted 2 yuan = the boss received 25

It's really confusing to ask this question, but in fact, the total amount of money in circulation is different

Three guests. Boss waiter.

10*3=30 for the first time

0 2nd 9*3=25

2 Since the total amount of money in the two circulation is different, the reasoning in the question is wrong, and there is no such thing as the one dollar.

This question should not be 27 to add 2, which is completely unreasonable (can you tell the truth?!!

It should be 27 = 2 + 25, that is, three people pay 27 yuan, the waiter gets 2 yuan, and the boss gets 25 yuan.

This topic has been asked before, and I have done it too. Now take a closer look:

There doesn't make any sense. What kind of money is 27? It was the money that the three people actually took out, including 25 yuan for the room and 2 yuan secretly hidden by the waiter. In other words, $2 is part of $27, so it can't be added.

2。Correct statement: 27 yuan was actually spent per person, including 25 room money and 2 yuan secretly hidden by the waiter. Each person will return 1 yuan, and a total of 3 yuan will be returned, so 25 + 2 + 3 = 30. That's it.

The three of them paid a total of 30 yuan, which is the most primitive money.

The owner gets $25.

The second child gets 2 yuan.

The boss and Xiao Er got a total of 27 yuan, which is the money the store got, and finally found 3 yuan, which is exactly what this equation should be.

30-3=25+2 The money of the traveler and the second child is one to pay and the other to get, how can it be added.

I don't think the algorithm is right, although I can't see the picture above, but I know the problem.

Where is this "education"?

It's a kind of trick-like question, if you follow his train of thought, you will only feel confused, but a little bit of thinking will reveal the mystery. First of all, the 9 yuan spent per person has included the 2 yuan hidden by the waiter (that is, ***25 yuan + 2 yuan = 27 yuan = 3 * 9 yuan) when calculating the composition of the 30 yuan, Hu Ku cannot count the 2 yuan hidden by the waiter, but should add the 1 yuan returned to each person. Namely:

3 * 9 + 3 * 1 = 30 yuan is just right.

There are 3 of them, each of them paid 10 yuan, and then they were returned to 1 yuan, so 10 yuan - 1 yuan = 9 yuan, that is, each person paid 9 yuan, 3 people paid a total of 3 people x 9 yuan = 27 yuan, digging and scattering The boss said that the rent discount of 25 yuan was enough, and the returned money The waiter took 2 yuan for the rent 25 yuan + the waiter took 2 yuan = 27 yuan, and the three people paid a total of 27 yuan, and the money was not less, why should it be equal to 30 yuan?

They only spent a total of 27 yuan (3*9), that is, 25 yuan for the blind rent, plus 2 yuan for the waiter, 25 + 2 = 27

The last sentence of the shed god accepts"9 yuan per person for 3 people, 3 x 9 = 27 yuan 2 yuan hidden by the waiter = 29 yuan, and one yuan went to **? "It's not a miasma method, they only spent a total of 27 yuan, why should it be equal to 30?

In the hands of the boss, think the other way around. Nine yuan per person, two yuan for the waiter, and one yuan for the boss.