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This is a well-known math problem that swaps concepts!

They each ended up spending 10-1=9 yuan, that is, a total of 9 3 = 27 yuan.

The 27 yuan includes the 25 yuan that the boss gets + the 2 yuan that the waiter hides = 27 yuan.

In addition, the three of them each got back 1 yuan 3 = 3 yuan, which is exactly 30 yuan.

The $2 the waiter took was included in the $27, the money they paid, not the money they got back!

Each of the 3 people paid only 9 yuan, 3 * 9 = 27 of the 27 yuan was taken by the waiter, and the remaining 25 yuan was handed over to the manager, and there was no problem of adding two yuan to get 29.

The 3 * 9 = 27 yuan paid by the customer has included the 2 yuan left by the waiter, and there is no arithmetic of the addition of 27 and 2. The boss got 25 yuan + the 2 yuan left by the waiter + 3 yuan returned to the customer = 30 yuan, which is the 30 yuan that the customer initially paid.

It should be 27-2, and the 2 yuan taken by the waiter is included in the 27 yuan, and they paid it, not what they took back.

That is to say, now these 3 people only pay 9 yuan each. This is not true. "Three people went to stay in a hotel, and the cashier charged 10 yuan for each of them.

It shows that one of them paid 10 yuan. Later, the manager felt that it was too expensive, and decided to refund them 5 yuan, so he asked the waiter to send it. It means that one of them paid 10-5 3=25 3 yuan.

So, "that means that now these three people only pay 9 yuan each." This is not true. Thus, 1 yuan less.

6 taels + 10 taels = 1 catty.

Note: In ancient times, 16 taels was 1 catty.

6 taels + 10 taels = 1 catty.

It can be said that 6 taels 10 taels 1 catty, in ancient China, 1 catty was equal to 16 taels, and generally people always said that half a catty was equal to eight taels in ancient times, which means that the current half catty is equal to eight taels in ancient times, that is, 1 catty is equal to 16 taels.

In the imperial total unit, one pound is equal to 16 ounces 6 (ounces) + 10 (ounces) = 1 (pound).

6 taels + 10 taels = 1 catty.

In ancient times, the meter was said to be 16 in, so 16 taels is a catty, idiom: half a catty and eight taels, it is said that there is no difference, and the same meaning is therefore the same.

6 taels plus 10 taels is 1 catty, which is an ancient calculation usage, and this is how the idiom of half a catty and eight taels comes from.

Simple intelligence questions, 8-1=8, but the questions are not simple, can you still think of the answers?

Six rivers + ten rivers = one lake.

6 oz + 10 oz = 1 lb.

Or in ancient times, 6 taels + 10 taels = 1 catty.

Liuwei Dihuang Pill Ten Perfection Great Tonic Pill A real man.

6 (two) + 10 (two) = 1 (jin) "Ancient eight taels = half a catty, 16 taels = 1 catty".

In the case of decimal, there is no solution!

The three singular numbers are set to 2n+1, 2m+1, and 2k+1 in turn, so 2(n+m+k)+3=30.

That is: 2(m+n+k)=27

The left is an even number, and the right is an odd number, so there is no such thing as a sum of three singular numbers = 30

In decimacimal: 1+15+15=30 3+13+15=30 5+13+13=30 5+11+15=30 7+11+13=30 9+11+11=30

In decimacimal: 3+15+15=30 5+13+15=30 7+13+13=30 7+11+15=30 9+11+13=30

In decimacimal system: 5+15+15=30 7+13+15=30 9+13+13=30

In hepadecimal: 7+15+15=30 9+13+15=30

In hexadecimal system: 9+15+15=30

15+11+

That's a lot.

If you don't add dots or other symbols, there is no solution.

There is no solution, and the sum of three odd numbers will not be even.

There is no solution to this problem, and the sum of any three odd numbers cannot be even.