In a party every person shakes hands with every other person. If there were a total of 171 handshakes in the party then what is the number of persons present in the party ?	Select:	A) 15	B) 16	C) 17	D) 18	E) 19
19xplanation :   Let the number of persons be n   âˆ´ total handshakes = nC2 = 171   n(n-1)/2 = 171 âˆ´ n = 19   Answer : Option 19
<result>E</result>
In a party every person shakes hands with every other person. If there were a total of 171 handshakes in the party then what is the number of persons present in the party ?