Number of handshakes in a party is 28.Find the number of people present in the party altogether?	Answers.
A) 5  B) 6  C) 7  D) 8  E) 9
no. of handshakes (ie) n(n-1)/2= 28   therefore no. of people present   n(n-1)=56   n2-n-56=0   n=8   No. of people present = 8   ANSWER:8
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Number of handshakes in a party is 28.Find the number of people present in the party altogether?