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An unbiased coin is thrown thrice. If th...

An unbiased coin is thrown thrice. If the random variable `X` denotes the number of heads obtained, describe the probability distribution of `X` .

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BETTER CHOICE PUBLICATION-PROBABILITY-Previous year Board.s questions for practice
  1. A problem is given to three students, whose chances of solving it are ...

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  2. Two bags contain 6 red and 4 black, 2 red and 6 black balls. One ball ...

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  3. An unbiased coin is thrown thrice. If the random variable X denotes th...

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  4. A coin is tossed 4 times. X is the number of heads observed. Find the ...

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  5. Two cards are drawn (without replacement) from a well shuffled deck of...

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  6. Four dice are thrown simultaneously. If the occurrence of 2, 4 or 6 in...

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  7. In four throws with a pair of dice, what is probability of throwing do...

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  8. Find the probability distribution of number of doublets in three throw...

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  9. A problem is given to three students whose chances of solving it are (...

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  10. A problem of mathematics is given to three students whose chances of s...

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  11. one bag contains 6 white and 5 black balls. Another bag contains 5 whi...

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  12. A bag 'A' contains 5 red and 7 blue balls, while the other bag 'B' con...

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  13. Let E and F be events with P(E)=3/5, P(F)=3/10 and P (E cap F)=1/5. Ar...

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  14. A die is thrown twice and the sum of the numbers appearing is observed...

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  15. A die is thrown. If E is the event ‘the number appearing is a multiple...

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  16. Given that the two numbers appearing on throwing two dice are differen...

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  17. If a fair of coin is tossed 10 times, find the probability of : (i) ...

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  18. In a single throw of three dice, determine the probability of getting ...

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  19. In a single throw of two dice, find the probability of total of 9 or I...

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  20. In a single throw of two dice, find the probability of total of 9 or 1...

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