Suppose that miracles do happen, but that there is no telling when they will happen because the time of the next occurrence of a miracle is independent of the last occurrence of a miracle. If the probability of a miracle within the next 1,000 years is 0.99, what is the probability that there will be a miracle within the next 200 years

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point