Explanation:

There are 20 men and 20 women.

When a man meets a woman, there are two namaskars, whereas when a man meets a man (or a woman) there is only 1 handshake.

Number of handshakes =2×20C2 (men and women ) = 2×20×192 = 380

For number of Namskars Every man does 19 namaskars (to the 20 women excluding his wife) and they respond in the same way.

Number of Namaskars,

=2×(20)(19)

=2×380 =760

Total,

=760+380 = 1140

Hence, option 2 is the correct answer.