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The probability that an event A happens ...

The probability that an event A happens in one trial of an experiment is 0.4. Three independent trials of the experiment are performed. The probability that the event A happens atleast once is

A

0.936

B

0.784

C

0.904

D

none

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
  1. Four positive integers are taken at random and are multiplied together...

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  2. If n positive integers are taken at random and multiplied together, th...

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  3. The probability that an event A happens in one trial of an experiment ...

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  4. The probability than an event does not happen in one trail is 0.8. The...

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  5. Numbers are selected at random one at a time from the two digit numbe...

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  6. The odds in favour of A winning a game of chess against B are 5:2. If ...

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  7. The probability of winning in a lottery is 0.15. If 4 tickets are purc...

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  8. Fifteen coupons are numbered 1,2,3….15 respectively. Seven coupons are...

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  9. A student appears for test I, II and III. The student is successful if...

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  10. An antiaircraft gun can take maximum of three shots at an enemy plane ...

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

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

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  13. A,B,C are aiming to shoot a balloon. A will succeed 4 times out of 5 a...

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

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

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

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

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

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

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

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