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Recent Problems

IDDescription / TitleSolved By
723Pythagorean Quadrilaterals121
722Slowly converging series244
721High powers of irrational numbers228
720Unpredictable Permutations195
719Number Splitting779
718Unreachable Numbers225
717Summation of a Modular Formula275
716Grid Graphs171
715Sextuplet Norms137
714Duodigits439