Question

12 discs numbered 1-12 are placed in a bag. Three discs are withdrawn at random. Without replacement from the bag. What is the probability that number 9 is drawn

Answer 1

n(S) = 12

E = n.o 9

n(E) = 1

P(E) = n(E)/n(S)

= 1/12

hence, the probability of the number to be 9 is 1/12.

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