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The probability of happening of an event...

The probability of happening of an event in a trial is 0.5. The probability of happening of the event atlest once if the experiment is repeated 3 times is

A

1.589

B

0.567

C

0.875

D

1.9275

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The correct Answer is:
C
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AAKASH SERIES-RANDOM VARIABLE -EXERCISE - II
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  2. One in 9 ships is likely to be wrecked , when they are set on sail. Wh...

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  3. The probability of happening of an event in a trial is 0.5. The probab...

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  4. The probability that an event does not happen in one trial is 0.8 The ...

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  5. 12 coins are tossed 4096 times. The number of times that one can get a...

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  6. Five coins are tossed 3200 times. The number of times getting exactly ...

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  7. A poisson variate x is such that P(x=2)=9P(x=4)+90.P(x=6) then mean an...

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  8. Suppose on an average 1 house in 1000 in a certain district has a fire...

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  9. A manufacturing concern emplyoing a large number of workers over a per...

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  10. If the number of telephone calls an operator receives between 10.00 pm...

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  11. The probability that an individual suffers a bad reaction from an inje...

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  12. Suppose there are 500 misprints in a book of 750 pages. Assuming that ...

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  13. In a book of 500 pages , it is found that there are 250 typing errors ...

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  14. A firm hires out 3 cars every day. The demand for a car on each day is...

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  15. Six coins are tossed 6400 times. The probability of getting 6 heads x ...

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  16. Six coins are tossed 9600 times. The probability of getting 5 heads 2 ...

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  17. Cycle tyres are supplied in lots of 10 and there is a chance of 1 in 5...

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  18. In a poisson distribution, the variance is m. The sum of terms in odd ...

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  19. A random variable x follows binomial distribution with mean a and vari...

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  20. A fair coin is tossed n times and x be the number of heads. If P(x=4),...

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