The probability that a 50 year old man will be alive at 60 is 0.83 and the probability that a 45 year old woman will be alive at 55 is 0.87. Then The probability that both will be alive is 0.7221 At least one of them will alive is 0.9779 At least one of them will alive is 0.8230 The probability that both will be alive is 0.6320