A) \[\frac{2}{5}\]
B) \[\frac{3}{4}\]
C) \[\frac{3}{5}\]
D) \[\frac{3}{10}\]
E) None of these
Correct Answer: A
Solution :
Explanation Option (a) is correct. \[P\,(E)=\frac{30}{100}=\frac{3}{10},\,P(H)=\frac{20}{100}=\frac{1}{5}\,\,and\,\,P(E\cap H)=\frac{10}{100}=\frac{1}{10}\] \[P\,(E\,\,or\,\,H)=P(E\cup H)+P(E)+P(H)-P(E\cap H)\] \[=\left( \frac{3}{10}+\frac{1}{5}+\frac{1}{10} \right)=\frac{4}{10}=\frac{2}{5}.\]You need to login to perform this action.
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