A box contains 100 items of which 4 are defective. Two items are chosen at random from the box. What is the probability of selecting (a) 2 defectives if the first item is not replaced; (b) 2 defectives if the first item is put back before choosing the second item; (c) 1 defective and I non-defective if the first item is not replaced?

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −