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Question

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?
  1. None of these
  2. 1235
  3. 635
  4. 2435


Solution

The correct option is D 2435
P(None of them will be selected)
=P[(not E) and (not F)]=P(¯E¯F)=P(¯E)×P(¯F)=67×45=2435

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