SSC JE Civil Engineering 30-Oct-2020 Shift 1 Paper

According to the given information,
The number of people present is n = 15.
The number of handshakes exchanged is,
n(n - 1) ÷ 2
= 15(15 - 1) ÷ 2
= 15(14) ÷ 2
= 15 × 14 ÷ 2
= 15 × 7 = 105
Here, number of handshakes exchanged is 105.
Hence, the correct answer is "105".