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Two coins are tossed. What is the probab...

Two coins are tossed. What is the probability of coming up two heads if it is known that at least on head comes up.

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. A coin is tossed twice and the four possible outcomes are assumed to b...

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  2. A coin is tossed, then a die is thrown. Find the probability of obt...

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  3. Two coins are tossed. What is the probability of coming up two heads i...

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  4. In a hostel 60% of the students read Hindi news paper, 40% read Englis...

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  5. Consider the experiment of tossing a coin. If the coin shows head, ...

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  6. If P(A)=7/(13),\ P(B)=9/(13)a n d\ P(AnnB)=4/(13),fin d\ P(A//B)dot

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  7. if A and B are events such that P(A)=0. 6 ,\ P(B)=0. 3\ a n d\ P(AnnB)...

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  8. If A and B are two events such that P(AnnB)=0. 32\ a n d\ P(B)=. 5 , t...

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  9. If P(A)=0. 4 ,\ P(B)=0. 8 ,\ P(B//A)=0. 6 . Find P(A//B) and P(AuuB)

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  10. If A and B are two events such that: P(A)=\ 1//3 , P(B)=1//4 and P(Auu...

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

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  12. If P(A)7/(13),P(B)=9/(13) and P(AnnB)=4/(13), find P(A/B)dot

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  13. If A and B are two events such that: P(A)=1/2 , P(B)=1/3 and P(AnnB)=1...

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  14. If A and B are two events such that 2 P(A)=P(B)=5/(13) find P(A ∩ ...

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

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

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

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  18. Determine P (E|F)in :A coin is tossed three times, where (i) E : Head...

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  19. Two coins are tossed once. Find P(A/B) in each of the following ...

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

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