what to do for:
1.cyclic handshake
2.acyclic handshake
3.when to apply n(n-1)/2

• 1. for cyclic >> no. of handshakes is = no. of peoples.
  2. for acyclic>> no. of handshakes is = no. of peoples - 1.
  3. when everyone is shaking hands with everyone else apply n(n-1)/2.
• 14 years agoHelpfull: Yes(19) No(0)
• Suppose there are n people namely A1, A2, ... AN
  1. Cyclic Handshake
  A1 shaking hands with A2
  A2 shaking hands with A3
  A3 shaking hands with A4
  ...
  An-1 shaking hands with An
  An shaking hands with A1
  
  Here, each person shakes hands with only two people
  
  2. Acyclic Handshake
  Here, A1 shakes hand with each of the (n-1) people around
  
  3.
  So, total handshakes = n*(n-1)/2
  the division by 2 is becuase each handshake would be counted twice when we move as per the above method (acyclic handshake)
  
  
• 13 years agoHelpfull: Yes(2) No(0)
• 1.cyclic=n-1
• 14 years agoHelpfull: Yes(0) No(3)