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In a family of 3 children, the probabili...

In a family of 3 children, the probability of having at least one boy is `7/8` (b) `1/8` (c) `5/8` (d) `3/4`

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RD SHARMA ENGLISH-PROBABILITY -All Questions
  1. A target shown in Figure, consists of three concentric circles of radi...

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  2. Tickets numbered from 1 to 20 are mixed up together and then a ticket ...

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  3. In a family of 3 children, the probability of having at least one boy ...

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  4. Find the probability that a number selected at random from the numbers...

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  5. In a simulataneous throw of a pair of dice, find the probability of ...

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  6. A number is selected at random from the numbrs 3,5,5,7,7,7, 9,9,9,9. ...

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  7. The probability of guessing the correct answer to a certain test qu...

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  8. Two dice are rolled one after the other.The probability that the numbe...

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  9. A letter is chosen at random from the letters of the word ASSASSINA...

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  10. A number x is selected from the numbers 1,2,3 and then a second number...

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  11. A jar contains 54 marbles each of which is blue, green or white. The ...

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  12. It is know that a box of 600 electric bulbs contains 12 defective b...

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  13. A bag contains 3 red and 2 blue marbles. A marble is drawn at random. ...

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  14. A bag contains 5 red balls, 8 white balls, 4 green balls and 7 black ...

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  15. 17 cards numbered 1,2,3....., 17 are put in a box and mixed thoroughly...

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  16. In the Figure, a square dart board is shown. The length of a side of ...

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  17. Two numbers a and b are selected successively without replacement in t...

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  18. If number x is chosen fromthe numbers 1,2,3, and a number y is selecte...

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  19. A bag contains 5 red balls and some blue balls. If the probability ...

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  20. A bag contains 12 balls out of which x are white. If one ball is...

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