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The probability that a company executive...

The probability that a company executive will travel by train is `2/3` and that he will travel by plane is `1/5.` The probability of his travelling by train or plane is (i)`2/15` (ii)`13/15` (iii)`15/13` (iv)`15/2`

A

`(2)/(15)`

B

`(13)/(15)`

C

`(15)/(13)`

D

`(15)/(2)`

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The correct Answer is:
B
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DISHA PUBLICATION-PROBABILITY-1-EXERCISE-1 : CONCEPT BUILDER
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  2. Let A ,B ,C be three events such that P(A)=0. 3 ,P(B)=0. 4 ,P(C)=0. 8 ...

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  3. Events A, B, C are mutually exclusive events such that P(A)=(3x+1)/(3)...

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  4. In a horse race the odds in favour of three horses are 1 : 2, 1 : 3 an...

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  5. A natural number x is chosen at random from the first one hundred natu...

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  7. A die is rolled. Let E be the event die shows 4 and F be the event ...

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  8. A die is loaded in such a way that each odd number is twice all likely...

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  12. The odds in favour of the occurrence of an event are 3:5. Find the pro...

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  13. A card is drawn at random from a pack of cards. What ist the probabili...

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  14. In a single throw of two dice, the probability of getting a total of ...

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  16. The probability that a company executive will travel by train is 2/3 a...

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  17. A positive integer N is selected so as to be 100ltNlt200. Then, the pr...

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  18. Card is drawn from a pack of 52 cards. A persons bets that it is a spa...

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  19. The chance of an event happening is the square of the chance of a seco...

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