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A student appears for test I, II and III...

A student appears for test I, II and III. The student is successful if he passes, either in tests I and II or tests I and III. The probabilities of the student passing in tests I, II and III are p, q and 1/2 respectively . If the probability that the student is successful is 1/2 then

A

p=q=1

B

p=q=1/2

C

p=1, q=0

D

none

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  3. A student appears for test I, II and III. The student is successful if...

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  5. Mr. A is called for 3 interviews . There are 5 condidate at the first ...

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  6. The probability that a teacher will give an unannounced test during an...

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  8. India plays two matches each with West Indies and Australia . In any ...

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  9. A multiple choice examination has 5 questions . Each question has thre...

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  10. A: If the probabilities of A and B to pass the examination are 2//10, ...

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  11. If the probability that A and B will die within a year are p and q res...

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  12. The probability of A solving a problem is 0.3 and the probability of B...

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  13. The probability that A speaks truth is 4/5 , while this probability fo...

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  14. A speaks truth in 80% of the cases and B in 60% of the cases. The perc...

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  15. A speaks the truth in 75% of the cases , B in 80% cases. What is the p...

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  16. For a student the probability of getting a pass in one paper is 75% an...

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  17. There are four machines and it is known that exactly two of them are f...

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  18. Two person A , B in order cut a pack of cards replacing them after eac...

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  19. Two persons A and B toss a die. The person who first throws 6 first th...

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  20. Two persons A and B are rolling die on the condition that the person w...

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