Spend 8 yuan on a chicken. 9 yuan sells it. 10 yuan repurchased, 1 1 yuan sold. How much did he earn? Correct answer.

It is said that the exam questions of a large company passed the interview: the reason is that the whole transaction is divided into three times' the first transaction: 8 yuan buys, 9 yuan sells, and the profit is 1 yuan;

The second transaction: 9 yuan sells, 10 yuan buys, and the profit is-1 yuan;

The third transaction: 10 yuan buys, 1 1 yuan sells for profit 1 yuan;

The whole process: 1-1+1=1yuan, but in fact you can earn 1 1-8=3 yuan. Now you only earn1yuan, so it is a negative 2 yuan. I use profit and loss (expected profit-actual profit). I think everyone should understand this! The answer to the question is profit or loss or actual profit (profit for short). Everyone has their own standards ~ don't care who is right or wrong! The key is how much profit! The successful interviewer's answer is 1, which makes sense on the surface, but it's pure nonsense, and the interviewer is also an idiot! For example, if you have ten dollars to buy a chicken, there are two dollars left; If you sell a chicken, you have 1 1 yuan; If you bought a chicken with nine yuan, you have two yuan left. The result really seems to cancel out, but you sold the chicken and found that it has 12 yuan! The reason is simple: profits have not been offset, and it is even more impossible to disappear. Profits actually offset the added value of costs. When the chicken becomes nine yuan, the profit of 1 yuan offsets the increased cost of one yuan. After the offset, the chicken cost is still eight yuan. After selling ten dollars, it should be ten MINUS eight instead of ten MINUS nine. Profit, 2 yuan. In fact, the three-step assembly it envisages is wrong. The second step is to sell chickens, and the second step is to buy chickens. But put it back in the whole transaction process, it is not in this transaction at all, because it has been sold in the first step. How to sell the second step? Where can I sell it to him? Isn't this the same account twice? Similarly, 9 yuan Chicken has been bought twice, so the second transaction must be taken off the shelf. Buy chickens and sell chickens instead of buying chickens and selling chickens ~ ~ so don't think that the interview questions of big companies. Some people think that the cost of chicken has increased by 1 yuan, so the profit is not 2 yuan. This is really funny. Can't you see that the price has also gone up? So the answer is profit 2 yuan, profit and loss 1 yuan! Some people please don't say that from an economic point of view, people who don't even know math can talk about the economy and are not afraid of jokes ~ they have to run if they can't walk.