You have two jars, 50 red marbles and 50 blue marbles. A jar will be picked at random, and then a marble will be picked from the jar. Placing all of the marbles in the jars, how can you maximize the chances of a red marble being picked? What are the exact odds of getting a red marble using your scheme?

• one red ball in one jar. 49 red + 50 blue in second jar.
  probability to get red ball is 1/2(1+49/99) = 74/99
• 14 years agoHelpfull: Yes(15) No(0)
• 1/2(1+49/99)
  as by putiing one red ball in one jar and remaining ball in other jar we get the max prob=
  74/99
• 14 years agoHelpfull: Yes(7) No(2)
• keeping 25 blue , 25 red marbles in each jar .... odds of getting is 1:1
• 14 years agoHelpfull: Yes(1) No(11)
• 1/2
• 14 years agoHelpfull: Yes(1) No(12)