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What is the probability of getting at least two heads?

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RD SHARMA-PROBABILITY-All Questions
  1. The following table gives the life time of 400 neon lamps: Life ...

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  2. Given below is the frequency distribution of wages (in Rs.) of 30 w...

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  3. Define a trial.

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  4. Define an elementary event.

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  5. Define an event

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  6. Define probability of an event.

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  7. A bag contains 4 white balls and some red balls. If the probability...

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  8. A die is thrown 200 times. If the probability of getting an even num...

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  9. Three coins are tossed simultaneously 200 times with the following ...

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  10. What is the probability of getting at least two heads?

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  11. The probability of an impossible event is 1       (b)  0    (c) ...

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  12. The probability of a certain event is 0       (b)  1     (c)  gr...

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  13. The probability an event of a trial is 1      (b)  0    (c)  les...

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  14. Which of the following cannot be the probability of an event? 1/3 ...

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  15. Two coins are tossed simultaneously. The probability of getting atm...

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  16. A coin is tossed 1000 times, if the probability of getting a tail i...

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  17. A dice is rolled 600 times and the occurrence of the outcomes 1, 2,...

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  18. The percentage of attendance of different classes in a year in a sch...

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  19. A bag contains 50 coins and each coin is marked from 51 to 100. One...

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  20. In a football match, Ronaldo makes 4 goals from 10 penalty kicks. Th...

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