BRAIN TEASER!
Daniel and Isabel invited three couples for dinner. When they meet, not everyone is shaking hands with everyone. Later that evening Daniel asks, who shook how many hands. Although nobody shook the hand of his or her own partner, and nobody shook the hand of a person more than once, everyone is naming a different amount of handshakes. How many hands shook Isabel?
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Daniel and Isabel invited three couples for dinner. When they meet, not everyone is shaking hands with everyone. Later that evening Daniel asks, who shook how many hands. Although nobody shook the hand of his or her own partner, and nobody shook the hand of a person more than once, everyone is naming a different amount of handshakes. How many hands shook Isabel?
◆ Proper explanation needed.
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6 hands of the couples and 1 hand of Daniel himself (Because Daniel and Isabel are not given to be couple or partners!)