Assume that for next Saturday night you are on waiting-list at two restaurants, Tres Chic, and PeptoB Palace. Probability Tres Chic will have opening and be able to seat you then is 0.25, and probability of PeptoB will be able to seat you then is 0.80. Suppose that possibility of being seated at two restaurants are independent of each other, determine the probability that
a. both restaurants will be able to seat you next Saturday night?
b. that at least one restaurant will be able to seat you next Saturday night?
c. neither of two restaurants will be able to seat you next Saturday night
d. Tres Chic will be able to seat you, but PeptoB will not?