Q.25. 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) 7%
(B) 14%
(C) 35%
(D) 49%
(E) None of these
Q.26. A bag contains 8 apple and 6 orange. Four fruits are drawn out one by one and not replaced. What is the probability that they are alternatively of different fruits?
(A) 10/143
(B) 15/120
(C) 20/143
(D) 26/110
(E) None
Q.27.In an interview the probability of Praveen to got selected is 0.4. The probability of Geetha to got selected is 0.5. The probability of Sam to got selected is 0.6. The probability of Suresh to got selected is 0.8. What is the probability that at least 2 of them got selected on that day?
(A) 0.806
(B) 0.632
(C) 0.688
(D) 0.732
(E) None
Q.28. A basket contains 10 red ball and 15 white ball. out of which 3 red and 4 white balls are damaged. If two balls selected at random, what is the probability that either both are white balls or both are not damaged?
(A) 203/435
(B) 313/300
(C) 317/400
(D) 203/300
(E) None
Q.29. A box contains tickets numbered from 1 to 16. 3 tickets are to be chosen to give 3 prizes. What is the probability that at least 2 tickets contain a number which is multiple of 4?
(A) 19/240
(B) 11/240
(C) 43/250
(D) 9/80
(E) None
Q.30. Chance that Sheela tells truth is 35% and for Ramesh is 75%. In what percent they likely to contradict each other in the same question?
(A) 9/40
(B) 15/25
(C) 25/40
(D) 23/40
(E) None
Q.31. Two dice are thrown simultaneously. What is the probability of getting the sum of the numbers as even?
(A) 1/3
(B) 2/3
(C) 1/2
(D) 3/4
(E) None
Ask me in the comment section, If you face any problem while solving important probability questions. Visit next page for more chain rule problems.
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