40 red, 20 blue, 25 white, 15 yellow. assuming you DONOTreplace marblesa. what is the probabilty the first marbles is yellowb. if the first was yellow whats the probabilty the second is yellow
c. if first 2 are yellow whats the probabilty 3rd is red
a. P(first marble yellow) =15/100= 0.15
b. P(second yellow| first yellow) = 14/99=0.1414
c. P(red\First two yellows) =40/98 =0.4081
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