1.A man and his wife appear in an interview for two vacancies in the same post. The probability of husband's selection is (1/7) and the probability of wife's selection is (1/5). What is the probability that only one of them is selected ? A) 4/5 B) 2/7 C) 8/15 D) 4/7 View Answer Report DiscussAnswer: Option BExplanation:
2.A speaks truth in 75% cases and B in 80% of the cases. In what percentage of cases are they likely to contradict each other, narrating the same incident ? A) 5% B) 15% C) 35% D) 45% View Answer Report DiscussAnswer: Option CExplanation:
3.Two dice are tossed. The probability that the total score is a prime number is : A) 1/6 B) 5/12 C) 1/2 D) 7/9 View Answer Report DiscussAnswer: Option BExplanation:
4.In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he. has offered English or Hindi ? A) 2/5 B) 3/4 C) 3/5 D) 3/10 View Answer Report DiscussAnswer: Option AExplanation:
5.A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective, is : A) 4/19 B) 7/19 C) 12/19 D) 21/95 View Answer Report DiscussAnswer: Option BExplanation:
