Question 446443
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Hi,
20 marbles in all of which: 5 are blue, 5 are red, 5 are white and 5 are black
Drawing 2 marbles without replacin the 1st blue drawn
 P(2 blue) = 5/20*4/19 = 20/380 = 1/19
Drawing 2 marbles with replacement of the first blue one
  P(2 blue) = 5/20*5/20 = 25/400 = 1//16
 1/16 > 1/19