The probability of a lottery ticket being a prized ticket (winning) is p = 0.2. The probability of a lottery ticket not being a prized ticket (losing) is q = pendently. We want the probability of winning a prize on at least one ticket. It is easier to calculate the complement probability: the probability of winning a prize on none of the tickets (i.e., losing on all 4 tickets). The probability of losing on one ticket is 0.8. Since the tickets are independent, the probability of losing on all 4 tickets is the product of the individual probabilities: P(Losing on all 4) = winning a prize on at least one ticket is 1 minus the probability of winning on none: P(Winning at least