Mathematics, 24.05.2021 04:50 vladisking888
COMBINATORICS
There are 15 pupils who enjoy solving puzzles. They meet each other to solve puzzles. At their first meeting, they shake hands with each other. Find the number of handshakes if
(a) all shake hands with one another,
(b) three people who know one another do not shake hands with each other.​
Answers: 1
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COMBINATORICS
There are 15 pupils who enjoy solving puzzles. They meet each other to solve puzzles....
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