Interview Puzzles :: Discussion
There are n students in a class, each in possession of a different
personality attribute. As they are new in the school, so they want to
know about each other. To help the students, the teacher decides to
conduct an activity. The rule for the activity is that the students will
share the personality attributes of each other through a series of
bilateral conversations (e.g., via a telephone). Assume that in every
conversation both parties exchange all the personality attributes they
know at the time. What is the minimum number of conversations they need
to guarantee that everyone of them gets all the personality attributes?
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