Dice.
Task. What is the probability that at least one 6 appears when 6 fair dice are rlled?
Asner. Let, A" be the event that at least one 6 appears.
Thus, P(A) = probability that one 6 appears + + probability that tuwe 6 appears + ...... + prehability that six 6 appears.
However, this looks complicated. Instedt, we can use naiem of a valid probability function: P(A)= 1-P(A) Br P(A) = 1-P(A)
where f awe rolled. -event that no 6 appears when 6 fair dice