MATHEMATICS · Multi-part · CBSE · Mathematics · Probability · Probability
Problem
A box contains 4 red, 5 blue and 3 green marbles. Three marbles are drawn successively without replacement.
(i) Find the probability that none of the marbles drawn is blue.
(ii) Hence, determine the probability that at least one of the three marbles drawn is blue.
(iii) Comment on how the answers to parts (i) and (ii) are related.