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If E and F are two independent events an...

If `E` and `F` are two independent events and `P(E)=1/3,P(F)=1/4,` then find `P(EuuF)`.

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To find the probability of the union of two independent events \(E\) and \(F\), we can use the formula: \[ P(E \cup F) = P(E) + P(F) - P(E \cap F) \] Given: - \(P(E) = \frac{1}{3}\) - \(P(F) = \frac{1}{4}\) Since \(E\) and \(F\) are independent events, the probability of their intersection can be calculated as: \[ P(E \cap F) = P(E) \times P(F) \] Now, let's calculate \(P(E \cap F)\): \[ P(E \cap F) = P(E) \times P(F) = \frac{1}{3} \times \frac{1}{4} = \frac{1}{12} \] Next, we substitute the values into the union formula: \[ P(E \cup F) = P(E) + P(F) - P(E \cap F) \] Substituting the known values: \[ P(E \cup F) = \frac{1}{3} + \frac{1}{4} - \frac{1}{12} \] To perform this addition and subtraction, we need a common denominator. The least common multiple of 3, 4, and 12 is 12. Now, we convert each fraction: \[ P(E) = \frac{1}{3} = \frac{4}{12} \] \[ P(F) = \frac{1}{4} = \frac{3}{12} \] \[ P(E \cap F) = \frac{1}{12} \] Now substituting these values back into the equation: \[ P(E \cup F) = \frac{4}{12} + \frac{3}{12} - \frac{1}{12} \] Now, combine the fractions: \[ P(E \cup F) = \frac{4 + 3 - 1}{12} = \frac{6}{12} \] Finally, simplify the fraction: \[ P(E \cup F) = \frac{1}{2} \] Thus, the probability of \(E \cup F\) is: \[ \boxed{\frac{1}{2}} \]

To find the probability of the union of two independent events \(E\) and \(F\), we can use the formula: \[ P(E \cup F) = P(E) + P(F) - P(E \cap F) \] Given: - \(P(E) = \frac{1}{3}\) ...
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NAGEEN PRAKASHAN ENGLISH-PROBABIILITY-Miscellaneous Exercise
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