A $20,000 reward for information offered by the family goes unclaimed. An online fundraising site has also raised $17,000. Joseph Bose went to Hampton University. But on Oct. 30, 2015, his mother said ...
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7 unsolved math problems still worth $1 million
The seven Millennium Prize Problems represent some of the hardest unsolved questions in mathematics, including one famously solved by Grigory Perelman, who refused the million-dollar reward.
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