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Quantitative Aptitude :: Permutation and Combination - Discussion

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Choose the correct option.

36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is

A12

B11

C13

D18

Answer: Option (Login/Signup)

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