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# Math Challenge Problems Forum

Math Challenge Problem Forum: For challenging math problems (that you can solve yourself)

1. ### Read this first!

• Replies: 0
• Views: 1,109
Apr 15th 2014, 04:32 PM
1. ### An interesting problem for Multivariable Calculus Students

• Replies: 4
• Views: 1,197
Apr 25th 2012, 04:52 AM
2. ### decrypt the message

• Replies: 0
• Views: 606
Mar 13th 2012, 09:05 AM
3. ### pairwise differences of 20 +ve int. all < 70. At least 4 are equal.

• Replies: 0
• Views: 971
Mar 12th 2012, 10:07 PM
4. ### more integrals

• Replies: 5
• Views: 1,540
Mar 4th 2012, 11:19 PM
5. ### Permutations and Combinations.

• Replies: 6
• Views: 936
Mar 4th 2012, 01:15 AM
6. ### u.p. = t.u.p. for groups

• Replies: 1
• Views: 1,002
Jan 2nd 2012, 04:29 PM
7. ### Find mod ( det A )

• Replies: 4
• Views: 778
Dec 18th 2011, 04:28 AM
8. ### integrals

• Replies: 3
• Views: 1,157
Dec 13th 2011, 01:47 PM
9. ### Fun Little Differential Equation Exercise

• Replies: 7
• Views: 1,265
Dec 2nd 2011, 07:35 PM
10. ### S_4=1^4+2^4+...+n^4 (linear algebra method)

• Replies: 7
• Views: 1,154
Nov 21st 2011, 02:44 AM
11. ### Group Theory Problem

• Replies: 5
• Views: 1,205
Oct 22nd 2011, 12:16 PM
12. ### definite integral #5

• Replies: 2
• Views: 1,009
Aug 13th 2011, 12:32 PM
13. ### Determinental Identity

• Replies: 1
• Views: 723
Aug 5th 2011, 12:04 PM
14. ### IMO 2011 (Problem 6)

• Replies: 0
• Views: 1,016
Jul 19th 2011, 09:14 AM
15. ### IMO 2011 (Problem 5)

• Replies: 0
• Views: 738
Jul 19th 2011, 09:06 AM
16. ### IMO 2011 (Problem 4)

• Replies: 0
• Views: 786
Jul 19th 2011, 09:00 AM
17. ### IMO 2011 (Problem 1)

• Replies: 2
• Views: 1,089
Jul 19th 2011, 02:40 AM
18. ### IMO 2011 (Problem 3)

• Replies: 0
• Views: 689
Jul 18th 2011, 10:13 AM
19. ### IMO 2011 (Problem 2)

• Replies: 0
• Views: 872
Jul 18th 2011, 10:07 AM
20. ### improper integral #6 (three parameters)

• Replies: 1
• Views: 1,329
Jul 8th 2011, 02:44 PM
21. ### Eigenvalues of the Laplacian

• Replies: 2
• Views: 687
Jul 8th 2011, 09:25 AM
22. ### Divisibility Probability

• Replies: 9
• Views: 1,289
Jul 6th 2011, 11:19 AM
23. ### improper integral #5

• Replies: 3
• Views: 855
Jul 1st 2011, 01:29 PM
24. ### Non-compact metric spaces

• Replies: 2
• Views: 1,008
Jun 29th 2011, 08:50 PM
25. ### Series

• Replies: 3
• Views: 1,077
Jun 29th 2011, 04:59 PM
26. ### Inequality proof.

• Replies: 2
• Views: 812
Jun 28th 2011, 08:59 PM
27. ### A limit

• Replies: 6
• Views: 713
Jun 25th 2011, 02:23 PM
28. ### definite integral #5

• Replies: 2
• Views: 692
Jun 18th 2011, 04:00 PM
29. ### Induction: an inequality

• Replies: 1
• Views: 923
Jun 16th 2011, 06:42 PM

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