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The odds against a husband who is 45 yea...

The odds against a husband who is 45 years old, living till he is 70 are 7:5 and the odds against his wife who is now 36, living till she is 61 are 5:3. Find the probability that the couple will be alive 25 years hence, exactly one of them will be alive 25 years hence, none of them will be alive 25 years hence, at least one of them will be alive 25 years hence.

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  2. A bag contains 3 White, 3 black and 2 red balls. One by one three ball...

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  3. The odds against a husband who is 45 years old, living till he is 70 ...

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  4. A, B and C shot to hit a target. If A hits the target 4 times in 5 ...

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  5. Three critics review a book. Odds in favour of the book are 5:2, 4:3 a...

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  6. The probabilities of A, B and C solving a problem are 1/3, 2/7 and 3/8...

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  7. Three groups of children contain 3 girls and 1 boy; 2 girls and 2 boys...

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  8. In the two dice experiment, if A is the event of getting the sum of th...

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  9. Events E and F are independent. Find P(F),ifP(E)=0. 35a n dP(EuuF)=0. ...

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  10. Two dice are thrown together. Let A be the event getting 6 on the f...

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  11. For a loaded die, the probabilities of outcomes are given as under: P(...

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  12. A and B are two candidates seeking admission in a college. The probabi...

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  13. A bag contains 5 white, 7 red and 4 black balls. If four balls are ...

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  14. If P(A)=0. 4 ,P(B)=p ,P(AuuB)=0. 6 and if A and B are given to be inde...

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  15. Let A and B be two independent events. The probability of their sim...

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  16. A class consists of 80 students, 25 of them are girls and 55 are boys....

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  17. Two dice are thrown. Find the probability of getting an odd number on ...

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  18. A scientist has to make a decision on each of the two independent even...

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  19. In two successive throws of a pair of dice, determine the probability ...

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  20. A, B and C shot to hit a target. If A hits the target 4 times in 5 ...

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