Permutations And Combinations Question 113

Question: There are 15 persons in a party and each person shake hand with another, then total number of hand shakes is [RPET 2002]

Options:

A) $ ^{15}P_2 $

B) $ ^{15}C_2 $

C) $ 15! $

D) $ 2(15!) $

Show Answer

Answer:

Correct Answer: B

Solution:

  • Total number of handshakes = $ ^{15}C_2 $ .

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