Probability

Bihar Board Class 12 · Mathematics · 53 past questions

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1. Q4 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B

   Two dice are thrown. Find the probability that the numbers appeared have the sum 8 if the second die always…

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2. Q5 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B

   $P(A)=\frac{7}{13},\ P(B)=\frac{9}{13},\ P(A\cap B)=\frac{4}{13} \Rightarrow P(A/B) =$

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3. 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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4. 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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5. 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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6. Q28 2024 Set D2024 Set J

   $P(A)=\frac{1}{3},\ P(B)=\frac{1}{4},\ P(A \cap B)=\frac{1}{5} \Rightarrow P(B/A) =$

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7. Q32 20232023 Set E

   $P(A)=\dfrac{7}{11}, P(B)=\dfrac{9}{11}, P(A\cap B)=\dfrac{4}{11}\Rightarrow P(A/B)=$

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8. Q35 2021 Set J2021 Set I

   If $A$ and $B$ be two events then $P\left(\frac{A}{B}\right)+P\left(\frac{A'}{B}\right)=$

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9. Q44 2018

   If A and B are two events such that $P(A)\neq 0$ and $P\left(\frac{B}{A}\right)=1$

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