Which of the following statements are true? Mark all that apply.

A. if P(A) is the probability that event A will occur, the probability event A will not occur is
P(A) = 1 - P(A).

B. Expected Value is the average gain or loss of an event if the procedure is repeated many times.

C. if the odds for an event are 3 to 5, then the odds against that event are 5 to 3.

D. The probability of an impossible event is - 1.

E. If the Expected Value of a game is zero, we say that it is a 'fair game'

F. Expected Value is the actual gain or loss each time an event takes place.

G. The probability of an event that is certain is 0.