1.In how many diff. ways can a committee of 5 be selected from 62 members of a clinical staff.
5/62 *100 = 8.06%
2.In how many ways can a director of a research lab choose 2 chemists among 7 other applicants and 3 physicist from the applicants.
3.What is the possibility of drawing an ace from a well shuffled deck of 52 playing cards.
4.If 3 of 20 tires are defective and 4 of them are randomly chose for inspection, what is the probability that 1 of the defective tires will be included.
Any help will be appreciated, thank you