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A doctor is to visit a patient. From the...

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus, scooter or by other means of transport are respectively `3/(10),1/5,1/(10)a n d2/5`. The probabilities that he will be l

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The correct Answer is:
`(1)/(2)`.
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A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus , scooter or by other means of transportation are respectiely 3/10,1/5,1/10 or 2/5 . The probabilities that he will be late are 1/4,1/3 and 1/12 if he comes by train, bus and scooter respectively but if he comes by other means of transport, then he will not be late. If the arrives late, find the probability that he comes by train.

A person goes to his office by using different means of transport on different days. It is know that the probabilities that he will come by train, bus, scooter or by car are respectively 1/10, 3/10, 2/10 " and " 4/10 . The probabilities that he will be late are 1/4, 1/5, 1/6, " and " 1/3 if he comes by train, bus, scooter and car respectively, on one day when he reaches office, he is late. What is the probability he has come by train?

A cadiadate has to reach the examination centre in time, Probality of him going by bus or scooter or by other means of transport are (3)/(10),(1)/(10) ,(3)/(5) respectively. The probability of getting late , if the travels by bus is 1/4 ,1/3 if he travells by scooter and 0 for any other medium. But he reaches in time if the uses any mode of transport . He reached late at the centre. The probability that he travelled by bus is -

The probabilities of a student getting first class or second class or third class in an examination are (2)/(7) , (3)/(5) ,(1)/(10) respectively . The probability that the students fails is .

MODERN PUBLICATION-PROBABILITY-EXERCISE 13 (d) (LATQ)
  1. As man is known to speak truth 3 out of 4 times. He throws a die and ...

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  2. Three bags contain : (i) 4 red and 4 black, 2 red and 6 black balls ...

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  3. (i) Bag I contains 3 red and 4 black balls while another bag II contai...

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  4. A bag contains 4 red and 4 black balls, another bag contains 2 red and...

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  5. (a) (i) Bag I contains 5 red and 3 black balls, Bag II contains 6 red ...

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  6. Given three identical boxes I, II and III, each containing two coins. ...

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  7. In a tape recorder factory three machines A, B and C produced 50%, 30%...

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  8. A company has two plants to manufacture scooters. Plant I manufactures...

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  9. An insurance company insured 2000 scooter drivers, 4000 car drivers...

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  10. A doctor is to visit a patient. From the past experience, it is known ...

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  11. (i) A man is known to speak the truth 3 out of 4 times. He throws a di...

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  12. A bag contains 4 balls. Two balls are drawn at random, and are foun...

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  13. Of the students in a college, it is known that 60% reside in hostel ...

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  14. A laboratory blood test is 99% effective in detecting a certain dis...

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  15. Suppose, a girl throws a die. If she gets a 5 or 6 she tosses a coin t...

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  16. There are three coins. One is a two headed coin (having head on both ...

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  17. In a certain college, 4% of boys and 1% of girls are taller than 1....

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  18. Bag I contains 2 white, 1 black and 3 red balls, Bag II contains 3 whi...

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  19. (i) Coloured balls are distributed in three bags as shown in the follo...

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  20. The members of a consulting firm rent cars from three rental agencies ...

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