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AnimatronicLick · 46-50, M
Mr. and Mrs. Baker threw a party to which they invited 17 other couples. When all the guests arrived, there were 36 people. Some of them had met before, and some had not. All the people who had never met shook hands. Then, Mr. Baker asked every guest (including his wife) how many hands each of them had shaken. To his surprise, every person gave a different answer. How many hands did Mrs. Baker shake?