There's an old joke among mathematicians and stats professors that lotteries are a tax on people who are bad at math. Let's take a look at one lottery game and use what we have learned about odds and expected value to study how good an idea it would be to play the game. The image below is the back of a $5 scratch off ticket from the Illinois Lottery. Write the probabilities in fractional form when looking at the outcomes remember that you have to pay $5 per ticket.

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