you have a bucket of jelly beans,some are red,some are green,some are bule.With your closed eyes pick out 2 of a like color.how many trials you need to be sure of having 2 same color?
a.1
b.2
c.3
d.None of these

• The ans is 4..
  Solution : To pick at least 2 marbles of the same color we need to grab at least 4 marbles, since the worst case can be that three of them are different, the fourth marble has to be a repetition of one of three colors.
• 9 years agoHelpfull: Yes(5) No(3)
• some don't specify anything.... may be there are only 1 red, 1 green and 1 blue... None of these
• 9 years agoHelpfull: Yes(1) No(0)
• none of these
• 9 years agoHelpfull: Yes(0) No(0)
• Explain Sachin
  
• 9 years agoHelpfull: Yes(0) No(0)
• best case is 1 (both are same color)
  worst case is 2:- case 1 - suppose one is red and other is green.
  in next round case 2 - suppose one is red or green and other is blue.
  so my requirement full fill in 2 trial.
  
• 8 years agoHelpfull: Yes(0) No(0)