Q. 604.5( 2 Votes )
A group consists of 12 persons, of which 3 are extremely patient, other 6 are extremely honest and rest are extremely kind. A person from the group is selected at random. Assuming that each person is equally likely to be selected, find the probability of selecting a person who is (i) extremely patient (ii) extremely kind or honest. Which of the above you prefer more.
Answer :
Total number of possible outcomes, n(S) = 12
(i) Number of favorable outcomes, n(E) = 3
(ii) Number of favorable outcomes, n(E) = 9
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PREVIOUSA box contains cards numbered 3, 5, 7, 9, …, 35, 37. A card is drawn at random from the box. Find the probability that the number on the drawn card is a prime number.NEXTCards numbered 1 to 30 are put in a bag. A card is drawn at random from this bag. Find the probability that the number on the drawn card is(i) not divisible by 3(ii) a prime number greater than 7(iii) not a perfect square number.
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Which of the following amongst the given options cannot be the probability of an event:
(i) 1.01 (ii) 67%
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KC Sinha - Mathematics