Try your luck -- Mega Millions jackpot hits $900 million in US

Your chances of winning are slim to none, but it might be worth investing a few dollars in the Mega Millions contest in the United States before Friday's drawing.The previous largest single jackpot of $758.7 million was won last year by Mavis Wanczyk, a 53-year-old mother of two from Massachusetts.On Friday, that would be a total of $513 million -- before taxes, according to the Mega Millions website.