Probability

Bihar Board Class 12 · Mathematics · 53 past questions

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1. Q2 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B

   If $A$, $B$ and $C$ are three independent events then $P(ABC) =$

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2. Q3 2026 Set A2026 Set H2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B

   If $A$ and $B$ are two events such that $P(A)=\frac{1}{4}$, $P(B)=\frac{1}{3}$ and $P(A\cup B)=\frac{1}{2}$…

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3. Q9 2026 Set E

   If $A$ and $B$ are two events such that $P(A)=\frac14$, $P(B)=\frac13$ and $P(A\cup B)=\frac12$ then prove…

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4. Q14 2025

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

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5. Q21 2025 Set A2025 Set E

   Multiplication theorem of probability is

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6. Q23 2024 Set D2024 Set J

   If events $A$ and $B$ are independent then

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7. Q31 20232023 Set E

   If A and B are independent events, P(A) = 0.3 and P(B) = 0.4 then P(A∩B) =

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8. Q36 2021 Set J2021 Set I

   If $A$, $B$ and $C$ are three independent events then

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9. Q42 2018

   If A' and B' are independent events then…

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10. Q43 2018

    If events A and B are mutually exclusive then…

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11. Q45 2018

    If A and B are independent events then prove that: $P(A\cup B)=1-P(A')P(B')$

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12. Q47 2017

    If A and B are two independent event then $P(A\cap B)=$

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13. Q49 2017

    If A,B and C are three event independent of each other then $P(A\cap B\cap C)=$

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14. Q51 20162015

    If A and B are two independent events, then

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