In a state lottery a three digit integer is selected at random. A player bets $1 on a particular number and if that number is selected. The payoff is$500 minus the $1 paid for the ticket. Let X equal the payoff to the bettor (-$1 or $499). How do you find E(X)? 2. Originally Posted by laser In a state lottery a three digit integer is selected at random. A player bets$1 on a particular number and if that number is selected. The payoff is $500 minus the$1 paid for the ticket. Let X equal the payoff to the bettor (-$1 or$499). How do you find E(X)?