a. The probability that the first man is colorblind is .08, and the probability that the second is colorblind is also .08, so the probability that both are colorblind is .08*.08=.0064.
b. The probability that he IS colorblind is .08, so the probability that he is not is 1-.08=.92.
c. Similarly to part a, we can calculate this probability as .92*.92=.8464.
