Probability » Exercise - 113. If A & B are any two events, then the probability that exactly one of them occur is : (a) P (A) + P (B) - P (A ∩B) (b) P (A) + P (B) - 2 P (A ∩B) (c) P (A) + P (B) - P (A ∪B) (d) P (A) + P (B) - 2 P (A ∪B)
Probability » Exercise - 128. A pair of fair dice is rolled together till a sum of either 5 or 7 is obtained. Then the probability that 5 comes before 7 is : (a) 1/5 (b) 2/5 (c) 4/5 (d) none of these
Probability » Exercise - 120. 3 dice are thrown simultaneously. What is the probability of obtaining a total of 17 or 18 ? (a) 1/9 (b) 1/72 (c) 1/54 (d) none of these
Probability » Exercise - 17. A coin is tossed and a dice is rolled . The probability that the coin shows the head and the dice shows 6 is : (a) 1/8 (b) 1/12 (c) 1/2 (d) 1
Probability » Exercise - 113. If A & B are any two events, then the probability that exactly one of them occur is : (a) P (A) + P (B) - P (A ∩B) (b) P (A) + P (B) - 2 P (A ∩B) (c) P (A) + P (B) - P (A ∪B) (d) P (A) + P (B) - 2 P (A ∪B)