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  • ...2 + 2^{2008}</math>. What is the units digit of <math>k^2 + 2^k</math>? ([[2008 AMC 12A Problems/Problem 15|Source]]) ...f(18) + f(19) + f(20)</math>. ([//pumac.princeton.edu/info/archives/pumac-2008 Source])
    15 KB (2,618 words) - 12:03, 19 February 2025