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Topic  Replies  Views  Last post 

631
probably the hardest puzzle ever by andrew21

3  2,222  20080613 04:39:43 by mathsyperson 
632
A prodigious mind behind the numbers !!! by Jesusdpm

0  690  20080609 21:30:58 by Jesusdpm 
633
Butts & Cigarettes by ZHero

2  1,109  20080609 00:49:05 by ZHero 
634
Determine A. by tony123

1  747  20080606 06:08:46 by TheDude 
635
Prove by tony123

0  677  20080605 21:37:21 by tony123 
636
Determine the number by tony123

1  717  20080605 16:48:52 by JohnnyReinB 
637
Assume xyz=8. Prove that by tony123

1  726  20080605 08:54:40 by JaneFairfax 
638
Solve the following equation by tony123

1  704  20080602 01:01:07 by mathsyperson 
639
For which by tony123

1  705  20080531 01:29:43 by mathsyperson 
640
Two men by tony123

1  1,031  20080530 22:07:07 by JaneFairfax 
641
Google US Puzzle Championship by Kurre

0  775  20080529 05:46:26 by Kurre 
642
Beyond Monty Hall by MathsIsFun

8  2,389  20080528 04:57:47 by TheDude 
643
Relaxing game by Identity

0  713  20080527 00:43:28 by Identity 
644
Sticks! by JaneFairfax

9  3,100  20080520 22:39:33 by mathsyperson 
645
Two inequalities by Kurre

0  677  20080519 06:11:04 by Kurre 
646 
58  15,065  20080511 22:12:57 by JohnnyReinB 
647
The economist, the logician, and the mathematician by JaneFairfax

2  1,601  20080511 06:19:24 by JaneFairfax 
648
Guess my name! by jU

1  993  20080510 15:22:43 by John E. Franklin 
649
Dragon Boat by Identity

2  1,068  20080507 22:01:15 by Identity 
650
Plinx by JaneFairfax

6  1,747  20080507 12:16:33 by JaneFairfax 
651
Jenny by tony123

5  1,743  20080429 15:06:55 by integer 
652 
37  9,166  20080425 21:59:59 by landof+ 
653 
3  2,150  20080424 20:21:21 by Chocó 
654
2,4,8, what... by bossk171

14  3,834  20080415 03:12:18 by Kurre 
655
Peter Grabarchuk's Puzzle Book by MathsIsFun

3  1,588  20080411 09:49:28 by MathsIsFun 
656 
33  16,505  20080410 12:58:36 by 0001101 
657
Pentomino by Odette

0  909  20080401 20:56:52 by Odette 
658 
42  13,848  20080331 23:54:45 by lightning 
659
Inequality! Yay! by Identity

2  1,267  20080330 22:52:58 by Identity 
660
Find the smallest positive by tony123

1  907  20080326 06:07:52 by JaneFairfax 