The probability that a man who is 45 years old will be alive till he becomes 70 is `5/12`. The probability that his wife who is 40 years old will be alive till she becomes 65 is `3/8`. What is the probability that, 25 years hence, : none of them will be alive.

The probability that a man who is 45 years old will be alive till he becomes 70 is 5/12 . The probability that his wife who is 40 years old will be alive till she becomes 65 is 3/8 . What is the probability that, 25 years hence, : at least one of them will be alive.

The probability that a man who is 45 years old will be alive till he becomes 70 is 5/12 . The probability that his wife who is 40 years old will be alive till she becomes 65 is 3/8 . What is the probability that, 25 years hence, : exactly one of them will be alive.

The probability that a man who is 45 years old will be alive till he becomes 70 is 5/12 . The probability that his wife who is 40 years old will be alive till she becomes 65 is 3/8 . What is the probability that, 25 years hence, : the couple will be alive.

The probability that a man will live 10 more years is 1//4 and the probability that his wife will live 10 more years is 1//3 . Then the probability that neither will be alive in 10 years, is

The probability that a man will live 10 more years is 1//4 and the probability that his wife will live 10 more years is 1//3 . Then the probability that neither will be alive in 10 years, is

The odds against a husband who is 60 years old, living till he is 85 are 7:5 . The odds against his wife who is now 56, living till she is 81 are 5:3 . Find the probabilty that: at least one of them will be alive 25 years hence.