Indian Institute of Foreign Trade 2015 Solved Paper

Question : 10 of 124

Marks: +1, -0

In the board meeting of a FMCG Company, everybody present in the meeting shakes hand with everybody else. If the total number of handshakes is 78, the number of members who attended the board meeting is:

Validate

Solution:

(d) Let n be the number of members who attended the board meeting
Number of handshakes =

^n\C_2=

{n(n-1)}/2=78

Solving this n = 13

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