Q. 62
A dice is rolled twice. Find the probability that
(i) 5 will not come up either time.
(ii) 5 will come up exactly one time
Answer :
Total number of possible outcomes, n(S) = 36
(i) Number of favorable outcomes, n(E) = 11 {(5,1), (5,2), (5,3), (5,4), (5,5), (5,6), (1,5), (2,5), (3,5) (4,5), (6,5)}
(ii) Number of favorable outcomes, n(E) = 11 – 1 = 10
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RELATED QUESTIONS :
Which of the following amongst the given options cannot be the probability of an event:
(i) 1.01 (ii) 67%
(iii) -0.5 (iv) 
(v) 0.3
KC Sinha - Mathematics