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wu :: forums    riddles    medium (Moderators: ThudnBlunder, towr, SMQ, Icarus, Grimbal, Eigenray, william wu) Pages: 1 ... 13 14 15 16 17  ...  61 Start new topic    Subject Started by Replies Views Last post More Balls and Urns ThudnBlunder 2 1026 Dec 23rd, 2008, 8:20am by SMQ Average Hanoi Eigenray 10 823 Dec 22nd, 2008, 7:08am by Grimbal Climbing a slippery cone Leo Broukhis 16 994 Dec 21st, 2008, 12:28pm by Grimbal Not Both Algebraic ThudnBlunder 2 477 Dec 19th, 2008, 12:38am by Eigenray girls' geometry problem cool_joh 0 481 Dec 18th, 2008, 5:30am by cool_joh coin placing cool_joh 5 649 Dec 18th, 2008, 5:28am by cool_joh Clock Watcher ThudnBlunder 6 962 Dec 15th, 2008, 10:00pm by ThudnBlunder Some subset has sum 60 ecoist 6 489 Dec 12th, 2008, 12:27pm by Hippo 16 = x^8 Barukh 15 955 Dec 8th, 2008, 8:09am by Eigenray An Interesting Recursion ThudnBlunder 5 638 Dec 4th, 2008, 4:09pm by ThudnBlunder Comparison of fractions howard roark 16 1363 Dec 1st, 2008, 10:21am by rmsgrey Circumscribing Circles ThudnBlunder 5 564 Nov 28th, 2008, 11:56am by Eigenray Reconstruct The Game (Chess) ThudnBlunder 5 680 Nov 26th, 2008, 1:30pm by SMQ Yet another Diophantine Equation Barukh 2 552 Nov 26th, 2008, 6:03am by pex AP Cuboid Sir Col 8 761 Nov 5th, 2008, 11:23am by Eigenray Quadratic Inequality ThudnBlunder 1 871 Oct 27th, 2008, 2:09pm by teekyman Trig Equation ThudnBlunder 8 711 Oct 23rd, 2008, 1:09pm by Michael Dagg Two Intersecting Spheres ThudnBlunder 3 489 Oct 22nd, 2008, 6:21am by SMQ Reconstructing boggle Noke Lieu 4 583 Oct 21st, 2008, 5:57pm by Noke Lieu 2008 Dwarves Passionately Curious 12 845 Oct 19th, 2008, 2:45pm by Grimbal Numbers ThudnBlunder 7 623 Oct 19th, 2008, 12:24am by Grimbal 11 F's SnapShot 2 703 Oct 12th, 2008, 6:19pm by Noke Lieu two doors SnapShot 1 2368 Oct 9th, 2008, 2:15pm by towr What 2 words, when written, are always incorrect? Lycopene 12 1305 Oct 7th, 2008, 4:15am by rmsgrey Construction of a Regular Polygon Ronno 2 2316 Oct 2nd, 2008, 5:26am by Ronno restoring axes cool_joh 12 1521 Sep 27th, 2008, 6:25am by rmsgrey Subsets of subsets with same sum Aryabhatta 4 3669 Sep 26th, 2008, 6:59pm by cool_joh Triangular Lawns ThudnBlunder 6 1076 Sep 23rd, 2008, 12:57am by Eigenray Arithmetic progression in Z - {m^2+n^5} Aryabhatta 2 2426 Sep 22nd, 2008, 12:07am by Aryabhatta people in a building cool_joh 10 1270 Sep 19th, 2008, 3:27pm by Hippo Pages: 1 ... 13 14 15 16 17  ...  61 Start new topic  Normal Topic Hot Topic (More than 15 Replies) Very Hot Topic (More than 25 Replies) Locked Topic Sticky Topic Sticky Locked Topic Forum Jump: ----------------------------- riddles -----------------------------  - easy => medium   - hard   - what am i   - what happened   - microsoft   - cs   - putnam exam (pure math)   - suggestions, help, and FAQ   - general problem-solving / chatting / whatever ----------------------------- general -----------------------------  - guestbook   - truth   - complex analysis   - wanted   - psychology   - chinese

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