14.Probability
easy

$P ( A )=\frac{3}{5}$ और $P ( B )=\frac{1}{5},$ दिया गया है। यदि $A$ और $B$ परस्पर अपवर्जी घटनाएँ हैं, तो $P ( A$ या $B$ ), ज्ञात कीजिए।

A

$\frac{4}{5}$

B

$\frac{4}{5}$

C

$\frac{4}{5}$

D

$\frac{4}{5}$

Solution

Here, $P ( A )=\frac{3}{5} $,  $P ( B )=\frac{1}{5}$

For mutually exclusive events $A$ and $B,$

$P ( A $ or $B )= P ( A )+ P ( B )$

$P ( A $ or $B )=\frac{3}{5}+\frac{1}{5}=\frac{4}{5}$

Standard 11
Mathematics

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