A bag contains two red marble and five blue marbles. You draw a marble, record it's color, replace it, and then drawl a second marble. What is the probability that you will draw a blue marble at least once?
A) 0.28
B) 0.49
C) 0.71
D) 0.92
@CollateralDamage
@dan815

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i say c

there r 7 marbles in all, 5 r blue

so 5/7 is 0.71428571428

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