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A dice is thrown twice and the sum of th...

A dice is thrown twice and the sum of the numbers appearing is observed to be 6. What is the conditional probability that the number 4 has appeared at least once?

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A die is thrown twice and the sum of the numbers appearing is observed to be 6. What is the conditional probability that the number 4 has appeared at least once?

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  2. A pair of dice is thrown. Find the probability of getting 7 as the s...

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  3. A dice is thrown twice and the sum of the numbers appearing is observe...

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  4. Mother, father and son line up at random for a family picture. If A...

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  5. A die is thrown three times. Find P(A/B) and P(B/A), if A=4 appears...

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  6. Two persons A and B throw a die alternately till one of them gets a ...

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  7. A doctor claims of 60% of the patients he examines are allergic to ...

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  8. A clerk was asked to mail three report cards to three students. He ...

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  9. There are three urns A, B and C. Urn A contains 4 white balls and 5...

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  10. A bag contains 3 White, 3 black and 2 red balls. One by one three ball...

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

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

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

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

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

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

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

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

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

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

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