Ajay and his wife Kajol appear in an interview for two vacancies in the same post. The probability of Ajay's selection is 17 and that of his wife Kajol's selection is 15. What is the probability that none of them will be selected?
A
1235
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B
635
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C
2435
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D
Noneofthese
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Solution
The correct option is C2435 P(None of them will be selected) =P[(notE)and(notF)]=P(¯E∪¯F)=P(¯E)×P(¯F)=67×45=2435