Explain probability using hyper geometric distribution
A shelf in the Metro Department Store contains 85 coloured ink cartridges for a popular ink-jet printer. Eight of these cartridges are defective.
1) If a customer selects three of these cartridges at random from a shelf and what is the probability that they are all defective? (Round your answer to five decimal places)
2) If a customer selects three of these cartridges at random from a shelf and what is the probability that at least one is defective? (Round your answer to three decimal places)