A multiple-choice test has five possible answers for each question.

(a) If a student guesses at the answer, what is the probability that he or she selects the correct answer for one particular question?

(b) If the student first eliminates two of the five possible answers and guesses from the remaining possibilities, what is the probability that he or she selects the correct answer to that question?

(a) If a student guesses at the answer, the probability that he or she selects the correct answer for one particular question is

(b) If the student first eliminates two of the five possible answers and guesses from the remaining possibilities, the probability that he or she selects the correct answer to that question is?

8. A TV remote control has keys for channels 0 through 9.

a) If a key is selected at random, what is the probability that the key for channel 4 is pressed? b) If a key is selected at random, what is the probability that the key for an even number is pressed? c) If a key is selected at random, what is the probability that the key for a number more than 8 is pressed?

a) The probability that the key for channel 4 is pressed is.

b) The probability that the key for an even number is pressed is.

c) The probability that the key for a number more than 8 is pressed is.