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

AA 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?

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

CIf two diodes are drawn from the box what is the probability that they are both good?