a) A box contains 50 diodes of which 10 are known to be bad. A diode is selected at random. What...




a) A box contains 50 diodes of which 10 are known to be bad. A diode is selected at random. What is the probabil ity that it is bad?

b) If the first diode drawn from the box was good, what is the probability that a: second diode drawn wi ll be good?

c) If two diodes are drawn from the box what is the probability that they are both good?