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The three people paid a total of 30 yuan, spent 25 yuan, and the waiter hid 2 yuan, so each person spent 9 yuan, plus the 1 yuan they shared, it was exactly 30 yuan. So the dollar was found.

Summary: This question confuses people mainly because it separates the 2 yuan from the 27 yuan, and the algorithm of the original question mistakenly believes that the 2 yuan left by the waiter is not included in the 27 yuan, so there is an error result of 1 yuan less; In fact, the 2 yuan left without permission was included in the 27 yuan, plus the 3 yuan returned, and the result was exactly 30 yuan.

There is also an algorithm:

The 9 yuan spent per person has included the 2 yuan hidden by the waiter (i.e. ***25 yuan + 2 yuan hidden by the waiter = 27 yuan = 3 * 9 yuan), therefore, when calculating the composition of the 30 yuan, the 2 yuan hidden by the waiter cannot be counted, but the 1 yuan returned to each person should be added. That is: 3 * 9 + 3 * 1 = 30 yuan is just right!

In fact, the 2 yuan hidden by the waiter is included in the 9 yuan spent per person. So it shouldn't be a plus 2 in the endInstead, it should be plus 3 yuan to find 3 lodging people.

It's easy to confuse people into thinking that the waiter's hidden money is not included in the 27 yuan. Not really. Welcome.

The total consumer expenditure is 9*3=27 yuan, of which the store owner gets 25 yuan and the waiter gets 2 yuan.

27 yuan + 2 yuan hidden by the waiter = 29 yuan" This is an illogical algorithm, taking people into the ditch, adding income items and expenditure items, I don't know what the genius teacher taught.

This question is actually a language game played by the questioner, 100 catties of green onions, 1 piece of a catty, green onions and green onions can be sold separately, and there is no problem, the problem is that the person who bought green onions actually only bought 50 catties of green onions, and he bought them.

The money of those three people has not changed, which is equivalent to the boss taking 2 yuan to the waiter.

The 27 yuan includes the 2 yuan hidden by the waiter.

The main reason why this question confuses people is that it separates the 2 yuan from the 27 yuan, and the algorithm of the original question mistakenly believes that the 2 yuan left by the waiter is not included in the 27 yuan, so there is an error result of 1 yuan less; In fact, the 2 yuan left without permission was included in the 27 yuan, plus the 3 yuan returned, and the result was exactly 30 yuan.

There is also an algorithm:

The 9 yuan spent per person has included the 2 yuan hidden by the waiter (i.e. ***25 yuan + 2 yuan hidden by the waiter = 27 yuan = 3 * 9 yuan), therefore, when calculating the composition of the 30 yuan, the 2 yuan hidden by the waiter cannot be counted, but the 1 yuan returned to each person should be added. That is: 3 * 9 + 3 * 1 = 30 yuan is just right!

Because: Xiao Ming is not so tall when he was born, even if he is the tallest in the world later, then he has a process from childhood to childhood.

During this time, people taller than him abounded.

So, "For the first time in my life, I've seen someone taller than me!" This sentence is a false proposition!

Xiao Ming is growing taller day by day.

For example, fifteen-year-old Xiao Ming is definitely taller than eight-year-old Xiao Ming.