17 students are sitting in a circle.each person shakes hand with but not with his/her neighbours.how many hand shakes have been exchanged?
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Answered by
1
This means a person shakes hand with 17-2 = 15 others if we exclude the neighbors.
So total no of handshakes = 17C15
= 17!/15!*2!
= 17*16/2
=17*8= 136
So total no of handshakes = 17C15
= 17!/15!*2!
= 17*16/2
=17*8= 136
Answered by
0
Answer:
119
Step-by-step explanation:
17c2-17
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