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Math Puzzles Forum

Math Puzzle Forum: For math puzzles, brain teasers, word problems

1. Weighing in....

• Replies: 7
• Views: 705
Sep 13th 2010, 06:02 PM
2. :D just for elementary school :D

• Replies: 3
• Views: 595
Sep 13th 2010, 02:43 AM
3. A possible new paradox puzzle?

• Replies: 27
• Views: 1,440
Sep 11th 2010, 09:46 AM
4. Putnam Problem

• Replies: 5
• Views: 917
Sep 8th 2010, 11:01 AM
5. find the counterfeit by minimum number of weighings

• Replies: 6
• Views: 1,467
Sep 8th 2010, 07:41 AM
6. The Greatest Geometric Puzzle Ever

• Replies: 8
• Views: 976
Sep 2nd 2010, 01:59 PM
7. Chirstmas doll puzzle

• Replies: 1
• Views: 646
Sep 2nd 2010, 12:48 PM
8. middle school logic question

• Replies: 3
• Views: 1,321
Sep 1st 2010, 02:55 AM
9. Interesting game problem (packing)

• Replies: 2
• Views: 627
Aug 29th 2010, 07:18 PM
10. Aunti's Share!

• Replies: 5
• Views: 1,380
Aug 26th 2010, 09:44 PM
11. Help - Brain Teaser

• Replies: 9
• Views: 1,212
Aug 20th 2010, 02:10 AM
12. Simple Enough, Not For I

• Replies: 4
• Views: 1,007
Aug 18th 2010, 04:41 PM
13. Putnam Problem of the Day

• Replies: 6
• Views: 1,204
Aug 13th 2010, 09:32 PM
14. Puzzle needs to be solved

• Replies: 14
• Views: 875
Aug 12th 2010, 08:28 AM
15. Weighing in...

• Replies: 2
• Views: 573
Aug 10th 2010, 12:58 PM
16. Is this very simple equation impossible to solve without graphs or trial and error ?

• Replies: 5
• Views: 905
Aug 10th 2010, 02:00 AM
17. Proving orthogonal ?

• Replies: 4
• Views: 755
Aug 8th 2010, 08:54 PM
18. Triangles and stuff...

• Replies: 2
• Views: 749
Aug 8th 2010, 01:13 AM
19. 7-5=2=5-3

• Replies: 9
• Views: 707
Aug 7th 2010, 07:14 PM
20. Primes...

• Replies: 7
• Views: 635
Aug 6th 2010, 09:51 PM
21. Can you prove the following equation holds for all n where n is a natural number?

• Replies: 1
• Views: 671
Aug 6th 2010, 10:54 AM

• Replies: 13
• Views: 815
Aug 5th 2010, 03:27 AM
23. Very annoying math brainer.

• Replies: 3
• Views: 757
Aug 2nd 2010, 05:37 PM
24. What do these numbers have in common?

• Replies: 7
• Views: 978
Aug 2nd 2010, 08:23 AM
25. Number Theory , an easy proof .

• Replies: 5
• Views: 796
Aug 1st 2010, 07:01 PM
26. Silly microsoft lateral thinking riddle

• Replies: 3
• Views: 705
Aug 1st 2010, 10:00 AM
27. Explain the Order of this Finite Sequence

• Replies: 7
• Views: 629
Jul 28th 2010, 12:20 PM
28. Simple Math puzzle of dividing...

• Replies: 2
• Views: 726
Jul 28th 2010, 05:02 AM

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