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The probabilities that on a certain day ...

The probabilities that on a certain day the two trains from Calcutta and Mumbai arrive on time at Delhi are 0.93 and 0.89 respectively. The probability that both trains arrive on time is 0.87. Then the probability that at least one train is on time is ___________.

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A DAS GUPTA-Elementary Probability-Exercise
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  2. A and B are two events such that the probability that both A and B occ...

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  3. The probabilities that on a certain day the two trains from Calcutta a...

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  4. If four whole numbers taken art random are multiplied together, the...

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  7. A coin is tossed three times. The probability of getting head and tail...

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  8. A room contains 3 sockets for bulbs. If from a collection of 10 bulbs,...

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  9. A bag contains 17 markers with numbers 1 to 17 . A marker is drawn at ...

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  10. Five persons entered the lift cabin on the ground floor of an 8 flo...

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  11. A card is drawn at random from a pack of 52 cards. The chance that it ...

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  14. If x denotes the number of sixes in four consecutive throws of a dice,...

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  15. Let an ordinary coin be tossed 15 times. If Pr denotes the probability...

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  16. Two coins are tossed 4 times. The chance that there will be equal numb...

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

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  18. The odds in favour of A winning a game against B are 4 : 3. The probab...

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  19. The probability of a missile hitting a target bridge is1/5. Two miss...

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  20. A dice is thrown six times.The probability of getting three sixes, the...

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