Fun with num3ers
Thursday, February 24, 2011
Digits of 3-digit integers
Notice that
147 = 14^2 – 7^2 = (14 + 7) * 7, where 14 = 7 * 2
147 * (14 + 7) = 14^3 + 7^3 = 3087.
148 * (14 + 8) = 14^3 + 8^3 = 3256
Investigate to find other examples.
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