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Chủ đề: How Smart Are You?

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  1. #1
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    How Smart Are You?

    A guy walks into a store and steals a $100 bill from the register without the owner’s knowledge.

    He then buys $70 worth of goods using the $100 bill and the owner gives $30 in change.

    How much money did the owner lose?

    $30, $70, $100, $130, $170, or $200?

    Gã nọ vào một cửa tiệm tạp hóa, chôm 100 đô trong két của tiệm mà chủ tiệm không hay. Sau đó gã cầm tờ 100 đô ấy mua đồ hết 70 đô, chủ tiệm thối lại gã 30 đô. Vậy chủ tiệm mất bao nhiêu tiền? 30, 70, 100, 130, 170, hay 200 đô?



    Answer To Stolen Money Riddle


    The best answer from the choices is the owner lost $100. The $100 bill that was stolen was then given back to the owner. What the owner loses is the $70 worth of goods and the $30 in change, which makes for a total of $70 + $30 = $100. The owner has lost $100.
    Technically, the owner lost $30 plus the value, V, of the $70 of goods. Since stores typically sell goods at a markup, the value may be less than $70. But in the case of a loss leader, the owner may have lost more than $70.
    Another strategy to solve the problem is to break it down into two stores.
    Story A
    A guy walks into a store and steals a $100 bill from the register without the owner’s knowledge.
    How much money did the owner lose? Clearly the answer is $100. The owner is a net -100.
    Story B
    He buys $70 worth of goods using a $100 bill and the owner gives $30 in change.
    How much money did the owner lose? The owner did not lose any money, this is a routine transaction! If the goods are valued at V, the owner is a net +100 – V – 30 = 70 – V.
    The story in the riddle is the sum of the two stories. This means the owner’s position is the sum of the position in those two stories. The owner is a net -100 + (70 – V) = -30 – V. That is, the owner lost $30 plus the value of the goods. If the goods are valued at $70, then the owner lost $100.



    Misconceptions
    Many people think the answer is 200 dollars. It seems like the owner had $100 stolen, and then had another $100 stolen in the second story. But remember the thief also paid using the $100 bill, so the owner actually gets back $100. The owner’s loss is $100.
    Some people think $130 because the owner lost a $100 bill and then gave $30 in change. But remember the owner also received a $100 bill, and also gave away $70 in goods. Adding up all the transactions leads to the owner losing $100.
    The other incorrect responses are misunderstandings of a similar sort where people are not sure which numbers to add or subtract, or they are not taking into account all parts of the story.
    It may help to view the two parts as separate stories and then add them up. The fact the thief paid with the stolen $100 bill seems to be another source of confusion. It does not matter the $100 was stolen; it only matters that the bill was genuine currency.


    https://mindyourdecisions.com/blog/2...wer-explained/




    Lần sửa cuối bởi emyeukhoahoc, ngày 26-06-2018 lúc 09:43 AM.

  2. #2
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    How Smart Are You?

    A dod was tied to a rope 5 meters long and the dog's food was 15 metres away from the dog. How did the dog reach the food?

    Một chú chó bị cột vào sợi dây dài 5 mét mà thức ăn của chú thì đặt cách chú 15 mét. Chú đã lấy đồ ăn như thế nào?

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    Answer:

    The rope wasn't tied to anything so he could reach the food.
    Sợ dây đó đâu có cột vào chỗ nào đâu nên chú có thể lấy đồ ăn được.

  3. #3
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    How Smart Are You?



    A man buys a rope from a woman for $3 and hands the woman a $10 bill. The woman goes into the grocery store next door to get change. She returns and gives the man $7. After the man leaves, the clerk from the store comes and says, "Hey, that was a counterfeit bill you gave me." The woman gives the clerk a good bill.

    How much has the woman lost?

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    Ông kia mua một sợi dây thừng của bà nọ với giá 3 đô rồi đưa cho bà tờ 10 đô. Bà ta chạy qua cửa hàng bên cạnh đổi tiền. Bà quay lại và đưa cho ông kia 7 đô. Sau khi ông kia đi thì chủ cửa hàng bên cạnh lại qua nói: "Này bà, lúc nãy bà đưa tui tờ tiền giả nha bà." Bà ta trả chủ cửa hàng ấy một tờ tiền thật.
    Bà ấy mất bao nhiêu?

    Answer:

    Seven dollars plus the rope.
    7 đô và sợ dây.


  4. #4
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    How Smart Are You?

    A man was born in 1955, how is it today is his 18th birthday?


    Answer:

    He was born in room 1955 of the hospital.

    Cậu ta sinh trong phòng 1955 của bệnh viện!

  5. #5
    Vượt ngàn trùng sóng emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc is a splendid one to behold emyeukhoahoc's Avatar
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    How Smart Are You?

    Which is the largest room in the world?


    Answer:
    The room for improvement.


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