A box contains 12 marbles of three different colours green, yellow and blue-4 each, If you were to close your eyes and pick them at random, how many marbles must you take out to be sure that there are at least two of one colour among the marbles picked out?

• When 3 marbles are picked up it may be the maximum case that all are of different colors.
  So, if another one marble is picked up then surely it will match with one existing marble's color.
  so ans will be 4
  
  
• 11 years agoHelpfull: Yes(50) No(5)
• we have to take the worst case.
  i.e. 4 + 4 + 2 = 10
• 11 years agoHelpfull: Yes(8) No(3)
• 5 because picking 4 marble may consist of only marble of same colour .
• 11 years agoHelpfull: Yes(7) No(12)
• yes 4 marbles :)
• 11 years agoHelpfull: Yes(2) No(1)
• c is right
• 11 years agoHelpfull: Yes(1) No(3)
• 4let we picked 3 marbles it can be of g y and b, but the next marble will make any of the color to become two of same type
• 11 years agoHelpfull: Yes(1) No(1)
• ans is 4 because if we pick 3 marbles then it would be maximum of 3 different coloured marbles.But if we pick 4 marbles then there should be atleast 1 marbles that would be same colour.
• 11 years agoHelpfull: Yes(1) No(1)