1) In a jar there are 3 white marbles and 7 black marbles.You draw a marble and see
if it is black .If so , you stop.Otherwise,you keep the marble and draw again.You
repeat this process untill u draw a black marble.
a) Find the probablity that 3 draws are needed.
c) Find the probablity that 5 draws are needed.
Moderation Team
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