Probability
Top questions
See all →- Two fair dice are thrown together. What is the probability that the sum of the numbers on them is 8? Answer: C. 5/36 Answer: (C) 5/36 Favourable outcomes: (2,6), (3,5), (4,4), (5,3), (6,2) = 5 out of 36. Probability = 5/36. 1
- A bag contains 5 red, 4 blue and 3 green balls. Two balls are drawn at random together. What is the probability that both balls are of the same colour? Answer: B. 19/66 Answer: (B) 19/66 Favourable = binom52+binom42+binom32 = 10+6+3 = 19 . Total = binom122 = 66 . Probability = 19/66. 1
- Two fair dice are thrown together. What is the probability that the sum of the numbers is 8? Answer: B. 5/36 Answer: (B) 5/36 Favourable pairs: (2,6), (3,5), (4,4), (5,3), (6,2) = 5 out of 36. Probability = 5/36 . 1