There are 15 persons in a party and each person shake hand with anothe – McqOptions

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1.	There are 15 persons in a party and each person shake hand with another, then total number of hand shakes is [RPET 2002]
A.	\[^{15}{{P}_{2}}\]
B.	\[^{15}{{C}_{2}}\]
C.	\[15\,!\]
D.	\[2\,(15\,!)\]
Answer» C. \[15\,!\]

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