An organisation has three committes. Only two persons are members of
all these committes, but every person in the committee has 3members in
common. What is the least possible no. of members of any one committee?
a)4 b)6 c)7 d)5

• ans:a) 4
  Using 3 ven diagrams,2person common for 3 committes,3member common for 3committe.,so each diagram having 4least possible no.
• 12 years agoHelpfull: Yes(18) No(2)
• AB AB AB----2common
  ABCE ABCD ABDE -----3 common in each pair
  so,4 is ans.
• 12 years agoHelpfull: Yes(6) No(1)
• dummy ques
  ans should be 3
  
• 12 years agoHelpfull: Yes(3) No(15)
• Ans: 4
  
  Best Solved by Venn Diagrams.
  2 are common in all the three Groups.
  If 3 members are common in any two group, then 3-2=1 is exclusively common in those two.
  One group then has 2+1+1=4 members
  
  
  
• 12 years agoHelpfull: Yes(2) No(0)
• ques should be "but every pair in the committee has 3 members common"
• 12 years agoHelpfull: Yes(1) No(1)
• ans :a)4 Using 3 ven diagrams,2person common for 3 committes,3member common for 3committe.,so each diagram having 4least possible no.
• 10 years agoHelpfull: Yes(0) No(0)
• using ven diagram given in que that 2 members are common in all the three commites,and also given every person in the committee has 3 members common so @ 2+3=5
• 8 years agoHelpfull: Yes(0) No(0)