The probability that a 50-years-old man will be alive at 60 is `0.83` and the probability that a 45-years-old women will be alive at 55 is `0.87.` Then

The probability that a dealer will sell at least 20TV sets during a day is 0.45 and the probability that he will sell less than 24TV sets is 0.74 . The probability that he will sell 20,21,22 or 23 TV sets during the day is

The probability that a married man watches certain TV show is 0.4 and the probability that a married woman watches the show is 0.5. The probability that a man watches the show, given that his wife does, is 0.7. Then

The probability that a married man watches a certain T.V. show is 0.6 and the probability that a married woman watches the show is 0.5. The probability that a man watches the show given that his wife does watch is 0.8. If the probability that a wife watches the show given that her husband does watch is k, then (1)/(k) is equal to

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

If the probability that A and B will die within a year are p and q respectively, then the probability that only one of them will be alive at the end of the year, is

The odds in favour of A whose age is 45 years will alive upto 60 years are 7:10 . The odds against of B whose age is 50 years, will alive upto 65 years are 3:2 . Find the probability that at least one will alive upto next 15 years.

A police man fires four bullets on a dacoit. The probability that the dacoit will be killed by one bullet is 0.6. What is the probability that the dacoit is still alive?

Supposing that it is 8 to 7 against a person who is now 30 years of age living till he is 60 and 2 to 1 against a person who is now 40 living till he is 70 , find the probability that at least one of these persons will be alive 30 years hence .

The probability that a man aged 50 years will die in a year is p. The probability that out of n men A_(1) , A_(2) , A_(3) , ….., A_(n) each aged 50 year, A_(1) will die and first to die is

The probability that a man will hit a target in shooting practise is 0.3 . If he shoots 10 times, the probability that he hits the target , is