There is 7 friends (A1, A2, A3....A7).If A1 have to have shake with all without repeat. How many handshakes possible?
a) 6 b) 21 c) 28 d) 7

• since only A1 have to shake hands with all the others hence there will be a total of 6 hand shakes.
• 13 years agoHelpfull: Yes(71) No(9)
• if there are n people then no of handshakes without repeatetion = n-1
  so here n=7;
  ans= 7-1=6
• 13 years agoHelpfull: Yes(48) No(3)
• answer will be 6
  as A1 has to shake hand with remaining 6 friends..(with A2,A3,A4,A5,A6,A7)
• 13 years agoHelpfull: Yes(19) No(3)
• the answer is 6
• 13 years agoHelpfull: Yes(12) No(6)
• take dere 7 frnds.. n 1 st frnd have handshake wid 6 ..2nd one wid 5...3rd one wd 4,4th one wd 3,5 th 1 wd 2,6 th wd 1..so total handshake is (6+5+4+3+2+1)=21..its d ans...
• 13 years agoHelpfull: Yes(11) No(59)
• the ans will be 6
• 13 years agoHelpfull: Yes(9) No(5)
• for this type of ques : n * (n-1)/2
  hence ans = 7*6/2 = 21....
• 13 years agoHelpfull: Yes(9) No(36)
• there are total 6 handshakes possible without repeatation
• 12 years agoHelpfull: Yes(3) No(1)
• number of friends =7
  only A1 shacks hand with rest of 6 friend without repeating
  hence number of total hand shackes== 6
• 10 years agoHelpfull: Yes(2) No(0)