Latest TCS Aptitude Question SOLUTION: 19 people (a1,a2,......,a19) are invited to a party. The host and the hostess shake hands with each invitee and also with each other. The invitees shake hands in a circular fashion

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19 people (a1,a2,......,a19) are invited to a party. The host and the hostess shake hands with each invitee and also with each other. The invitees shake hands in a circular fashion, i.e. the pairs (a1, a2), (a2, a3),......,(a18, a19), (a19, a1) shake hands. So, in all there are 58 handshakes. Let S be a set of people such that every pair in S shake hands. The size of S is at most
O 2
O 3
O 1
O 4

Asked In TCS sinjita (12 years ago)

Solved Dr.Dipin Singh Read Solution (1)

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