Please Solve This Completely I am in Much Tension. Thank You

a) A group of friends decided to visit hill station (say H) in their vacations. To reach their destination they can follow two routes. The first directly connects H to K, whereas the second passes through G. Sometimes because of the weather conditions (snow falling), travelers cannot travel between K and H. If there is a forecast of snow for the next day, one can assume- (on the basis of prior information) P(H) - 0.6, P( K) = 0.7, P(G) - 0.4, P(GJK) - 0.5 and P(H [ GnK) - 0.4. Use the concepts of probability to find out the probability: That the traveler will be able to reach K from H? That the traveler will be able to drive from H to K by way of G? Which route should be taken in order to maximize his chance to reach K? b) Harry will miss an important talk show on TV while attending a workshop in university, so he sets two devices to record it. The first one records 70% of the time, and the second one records 60% of the time. Use the concepts of probability to find out the probability that he gets home after the workshop and finds: No copies of his program? One copy of his program