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A die is thrown twice and the sum of the...

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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  4. Determine P (E|F)in :Two coins are tossed once, where(i) E: tail appe...

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  5. A couple has two children. Find the probability that Both the children...

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  6. A die is thrown twice and the sum of the numbers appearing is observed...

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  7. A die is thrown three times events A and B are defined as below: A= Ge...

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  8. A black and a red dice are rolled. (a)   Find the conditional proba...

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  9. Consider the experiment of throwing a die. if a multiple of 3 comes ...

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  10. In a school there are 1000 students, out of which 430 are girls. It...

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  11. An instructor has a test bank consisting of 300 easy True/False que...

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  12. Given that A\ a n d\ B are two events such that P :(A)=0. 6 ,\ P(B)=0....

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  13. If P (A) =6/(11), P(B) =5/(11)and P(AuuB)=7/(11), find(i) P(AnnB) (ii)...

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  14. Ten cards numbered1 through 10 are placed in a box, mixed up thoroughl...

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  15. Assume that each child born is equally likely to be a boy or a girl. I...

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  16. Given that the two number appearing on throwing two dice are different...

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  17. A die is thrown three times, find the probability that 4 appears on th...

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  18. Compute P(A//B),\ if\ P(B)=0. 5\ a n d\ P(AnnB)=0. 32 .

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  19. If P(A)=0. 4 ,\ P(B)=0. 3\ a n d\ P(B//A)=0. 5 , find P(AnnB)\ a n d\ ...

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  20. If A and B are two events such that P(A)=1/3,\ find\ P(B) =1/5 a n d\ ...

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