How did the Powerball and Mega Millions lottery jackpots grow so big?
/Jackpots have been on the rise since those two major lottery organizations, Mega Millions and Powerball, struck a deal in 2010 to cross-sell tickets in each others' member states.
Today, state-sponsored lotteries contribute millions of dollars to state budgets, but some critics question how effective they actually are. CNBC finds out more.
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