2. 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)
Mathématiques
mohanas
Question
2. 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.
3. Three dice are thrown. What is the probability
that none of them shows a 1 or a 6?
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.
3. Three dice are thrown. What is the probability
that none of them shows a 1 or a 6?