Probability

Bihar Board Class 12 · Mathematics · 53 past questions

13 of 53 · show all

1. Q10 2025

   Let $E$ be an event of a sample space $S$ of an experiment, then $P\left(\frac{S}{E}\right) =$

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2. Q11 2025

   If $P(A) = \frac{5}{11}$, $P(B) = \frac{7}{11}$ and $P(A \cap B) = \frac{3}{11}$ then…

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3. Q12 2025

   A family has two children. If it is known that at least one child is a boy, then the probability that both…

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4. Q13 2025

   If $P(A) = \dfrac{6}{11}$, $P(B) = \dfrac{5}{11}$ and $P(A \cup B) = \dfrac{7}{11}$ then…

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5. Q14 2025

   If $E$ and $F$ are independent events then $P(E' \cap F') =$

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6. Q15 2025

   If $A$ and $B$ are two events such that $P(A) = \dfrac{1}{2}, P(B) = \dfrac{1}{3}$ and…

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7. Q16 2025

   The probability distribution of a random variable $x$ is following.…

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8. Q17 2025

   Find the probability distribution of the number of doublets in three throws of a pair of dice.

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9. Q18 2025 Set A2025 Set E

   If odds in favour of event $E$ be $a : b$, then $P(E) =$

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10. Q19 2025 Set A2025 Set E

    The chance of getting a doublet in a throw of 2 dice is

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11. Q20 2025 Set A2025 Set E

    Addition theorem of probability is

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12. Q21 2025 Set A2025 Set E

    Multiplication theorem of probability is

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13. Q22 2025 Set E20172015

    A speak the truth in 75% cases and dB B in 80% of the cases. In what percentage of the cases are they likely…

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