Re: Math Question
Number of total possible draws:
16 X 15 X 14 X 13 = 43,680
Number of draws containing at least a blue marble:
2 X 15 X 14 X 13 = 5,460
Probability of drawing at least a blue marble:
5,460 X 100 / 43,680 = 12.5%
Probability of drawing four red:
100% - 12.5% = 87.5% or odds of 7:1
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