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20 men handshake with each other without repetition. What is the total number of handshakes made?

A. 190

B. 210

C. 150

D. 250

E. None of these

Answer: Option A

Solution(By Examveda Team)

Choosing 2 people out of 20 will result in a handshake and the same can be done in 20C2 ways
$${ \Rightarrow ^{20}}{C_2} = \frac{{20 \times 19}}{{2!}} = 190$$

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