#22 Brain Teaser: The Really, Really, Really Big Number

When you divide 12 by 5, the remain­der is 2; it’s what’s left over after you have removed all the 5’s from the 12.  When you raise 4 to the fifth pow­er (that is, 4^5), you mul­ti­ply four by itself five times: 4x4x4x4x4, which equals 1,024. What is the remain­der when you divide 100^100 by 11?

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Brain Fitness Programs, “Brain Gyms”…Explained

Thanks to Mind­Hacks for the link to a good Wash­ing­ton Post arti­cle, “Pump­ing Neu­rons”. A cou­ple of quotes: Recent research shows that the brain remains plas­tic, or basi­cal­ly train­able, through­out life. In a study pub­lished in the Jour­nal of the Amer­i­can Med­ical Asso­ci­a­tion in 2002, sig­nif­i­cant per­cent­ages of the 2,802 par­tic­i­pants age 65 and older…

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