A box of 15 batteries has 4 defective ones. (Enter your probabilities as fractions.) (a) ir 2 batteries are drawn from the box together, what is the probability that both are defective? 2/35 (b) If 2 batteries are drawn from the box together, what is the probability that neither one is defective? 8/195 (c) ir 2 batteries are drawn from the box together, what is the probability that one is defective? 1145