There are 34 people in a party. If everyone is to shake hands with one another, how many hand shakes are possible?
Options:
A) 435 B) 367 C) 361 D) 497 E) 561
561xplanation:   Total number of persons = n = 34   Shake hands involve only 2 persons = r = 2   Number of shake hands = nCr = 34C2   34C2 = (34 * 33) /(2 * 1)= 
<gadget id="calculator">(34 * 33) /(2 * 1)</gadget>
<output>561</output>
561   ANSW561R:561
<result>E</result>
There are 34 people in a party. If everyone is to shake hands with one another, how many hand shakes are possible?