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wu :: forums    riddles    hard (Moderators: Icarus, SMQ, towr, Grimbal, william wu, ThudnBlunder, Eigenray) Pages: 1 ... 14 15 16 17 18  ...  27 Start new topic    Subject Started by Replies Views Last post making change greedily inexorable 0 620 Nov 28th, 2005, 1:42pm by inexorable A Digital  Transference Problem K Sengupta 0 319 Nov 28th, 2005, 12:25am by K Sengupta 12 DIGIT NUMBERS K Sengupta 0 316 Nov 27th, 2005, 11:24pm by K Sengupta EXITING A NUMERICAL MAZE pcbouhid 5 405 Nov 27th, 2005, 7:59pm by SMQ The digit in the hundreds place pcbouhid 6 454 Nov 27th, 2005, 1:36pm by Eigenray Divisible by 7? pcbouhid 5 394 Nov 27th, 2005, 12:33pm by Icarus FINDING PRIMES IN A.P. pcbouhid 3 447 Nov 27th, 2005, 9:05am by SMQ Swapping 2n balls in n bins Eigenray 9 599 Nov 27th, 2005, 1:40am by JocK Evaluate f(1,000,000,000,000) pcbouhid 4 695 Nov 26th, 2005, 11:37pm by JocK Prove this! pcbouhid 6 423 Nov 26th, 2005, 1:47pm by Eigenray 15 DIGIT NUMBERS K Sengupta 1 298 Nov 25th, 2005, 11:05pm by K Sengupta Sum Of Squares K Sengupta 0 284 Nov 25th, 2005, 10:27pm by K Sengupta 11 Digit Numbers K Sengupta 4 328 Nov 25th, 2005, 9:51pm by K Sengupta Where are the digits? pcbouhid 0 315 Nov 25th, 2005, 10:29am by pcbouhid 2003 - an odissey with pi and e pcbouhid 17 1272 Nov 23rd, 2005, 1:57pm by towr Another infinite chessboard problem pcbouhid 10 2736 Nov 21st, 2005, 12:54am by Grimbal EVALUATE THIS INFINITE SUM pcbouhid 2 539 Nov 20th, 2005, 10:11am by Barukh A digital arrangement pcbouhid 1 343 Nov 20th, 2005, 6:46am by Eigenray 4 coins, one different Grimbal 4 469 Nov 19th, 2005, 4:12pm by ChunkTug WereWolf wife riddle JP shirley 3 2509 Nov 19th, 2005, 10:10am by BNC 36 BALLS, one different pcbouhid 4 1139 Nov 18th, 2005, 8:13am by Neelesh 5 Red Balls and a Green One Joe Fendel 0 511 Nov 17th, 2005, 6:03pm by Joe Fendel HARD: 12 balls S. Owen 17 3937 Nov 17th, 2005, 3:07pm by Icarus an infinite chess board problem thedkl 4 1430 Nov 14th, 2005, 11:59pm by thedkl Simple Football Pool Joe Fendel 5 1599 Nov 2nd, 2005, 2:49am by JocK Heronian dissection: square JocK 13 1657 Nov 1st, 2005, 11:11am by Barukh strategy to guess Infinite hats correctly inexorable 2 1219 Nov 1st, 2005, 9:25am by Barukh A Polynomial Mystery inexorable 6 1381 Nov 1st, 2005, 8:36am by inexorable HARD: MOUSE EATING CHEESE CUBES S. Owen 4 5129 Oct 28th, 2005, 1:53pm by Raja Reddy Gambler's Ruin Jigga Wha? 6 1628 Oct 26th, 2005, 10:14am by Jigga Wha? Pages: 1 ... 14 15 16 17 18  ...  27 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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