on the occasion of a certain meeting each member gave shake hand to
the remaining number.if the total shake were 1176,how many members were present for the meeting.
a)48 b)58 c)49 d)59

• Suppose there are n people so each people makes n-1 handshakes
  So total no. of handshakes=n(n-1)/2
  n(n-1)/2=1176
  Solving n=49
• 12 years agoHelpfull: Yes(12) No(1)
• nc2=1176
  and from there n=49
• 12 years agoHelpfull: Yes(2) No(3)
• i think n(n-1)
  is sufficient ...can anyone explain y n(n-1)/2 is taken?
• 11 years agoHelpfull: Yes(0) No(1)
• the simplest solution is it will be nCr (NO NEED TO REMEBER FORMULA) :D
  hence r will always be 2 hence, n*(n-1)/2 so check divisibility 49*48/2 (IMAGINE THIS)
  only 49 can divide 1176 properly by 24 times
  so 49 is the answer
• 7 years agoHelpfull: Yes(0) No(0)
• ans.49
  by using ncr
• 7 years agoHelpfull: Yes(0) No(0)