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

a)12 b)11 c)13 d)18

Answer Posted / sahanaj rahaman & saikat b

...36/3=12...
a1,a2....a2,a3....a4,a5..a5,a6...

Is This Answer Correct ?    25 Yes 7 No



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