10. A bag contains 20 discs of equal size of
which 12 are red, x are blue and the rest
are whi...
Mathematics, 04.04.2021 18:00 wickedskatboarder
10. A bag contains 20 discs of equal size of
which 12 are red, x are blue and the rest
are white.
a) If the probability of selecting a blue disc
is , find x.
b) A disc is drawn and then replaced.
A second disc is drawn. Find the
probability that neither disc is red.
​
Answers: 2
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