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Billionaire inverstor Warren Buffett chairman and CEO of Berkshire Hathaway, is interviewed by Becky Quick, co-host of CNBC's "Squawk Box," on the floor of the Omaha World-Herald's press room Monay Feb. 27, 2012, in Omaha Neb. Buffett said Monday that stocks remain relatively cheap compared to other investments as the economy continues to improve. He also said that the company he heads is prepared to replace him whenever the need arises. (AP Photo/The Omaha World-Herald, Jeff Beiermann)

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