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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) 13 b) 18 c) 11 d) 12
Read Solution (Total 6)
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- Ans is 12 and the set is
{a1,a4,a7,a10,a13,a16,a19,a22,a25,a28,a31,a34} - 14 years agoHelpfull: Yes(42) No(4)
- 18
- 14 years agoHelpfull: Yes(6) No(18)
- 18 as two people can shake hand at one time.
- 14 years agoHelpfull: Yes(5) No(10)
- B)18
der is a formula for dis dats n/3 where n is d number f ppl shaking hands.always use dis formula 2 solve dis sum. - 14 years agoHelpfull: Yes(3) No(25)
- 18
- 14 years agoHelpfull: Yes(1) No(17)
- 18
- 14 years agoHelpfull: Yes(0) No(6)
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