The problem below not only requires players to have logical thinking and quick calculation but also rich imagination.
The question is as follows: "Mr. and Mrs. Lars went to a meeting with 4 other couples to celebrate the New Year. The 5 couples shook hands with each other, but no one shook hands with their spouse. After shaking hands, Mr. Lars asked each person how many hands they shook with.
Everyone answered honestly and surprisingly, each person gave a different answer. Ask Mr. and Mrs. Lars how many people did they shake hands with?
Right after reading the question, many people gave up because they couldn’t find the answer. If you can figure out the pattern and solve the problem in a short time, you are definitely a smart person. Comment on the number of people Mr. and Mrs. Lars shook hands with and see how many people thought the same as you.
Source: https://vtcnews.vn/bai-toan-sieu-kho-chi-1-nguoi-giai-duoc-ar904675.html
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