14.Probability
medium

मान लें $E$ तथा $F$ दो घटनाएँ इस प्रकार हैं कि $P ( E )=\frac{3}{5}, P ( F )=\frac{3}{10}$ और $P ( E \cap F )=\frac{1}{5}$ तब क्या $E$ तथा $F$ स्वतंत्र हैं?

Option A
Option B
Option C
Option D

Solution

It is given that $P(E)=\frac{3}{5}, \,P(F)=\frac{3}{10}$ and $P(E F)=P(E \cap F)=\frac{1}{5}$

$P(E) .P(F)=\frac{3}{5} \times \frac{3}{10}=\frac{9}{50} \neq \frac{1}{5}$

$\Rightarrow P(E). P(F) \neq P(E F)$

Therefore,  $\mathrm{E}$ and $\mathrm{F}$ are not independent.

Standard 11
Mathematics

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