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Under
A 2006 Problem
(in
Numbers
)
Posted on 2006-07-27 (8 Comments)
Another approach
by
Nick Hobson
(2006-08-30 20:36:58)
Under
A Composite Determination Problem
(in
Just Math
)
Posted on 2006-04-23 (14 Comments)
Solution
by
Nick Hobson
(2006-04-23 18:29:27)
Under
Angle ABC
(in
Geometry
)
Posted on 2006-02-25 (17 Comments)
Another approach
by
Nick Hobson
(2006-02-26 12:57:07)
Under
Fibonacci Lore
(in
Numbers
)
Posted on 2005-06-10 (15 Comments)
re(4): Proof--Quick fix
by
Nick Hobson
(2005-06-13 13:26:20)
Modulo solution
by
Nick Hobson
(2005-06-12 22:39:38)
re(2): Proof--Quick fix
by
Nick Hobson
(2005-06-11 21:47:44)
Under
A question of primes
(in
Numbers
)
Posted on 2005-06-08 (13 Comments)
re(2): incomplete solu - thinking better
by
Nick Hobson
(2005-06-22 11:36:15)
re: Trial and Error
by
Nick Hobson
(2005-06-11 14:19:38)
Modulo solution
by
Nick Hobson
(2005-06-09 12:30:05)
Under
2005 a square? Baseless!
(in
Just Math
)
Posted on 2005-05-30 (18 Comments)
Modulo solution
by
Nick Hobson
(2005-06-01 20:10:16)
Under
Neither do I
(in
Word Problems
)
Posted on 2005-01-03 (9 Comments)
Nice-one!
by
Nick Hobson
(2005-01-03 12:43:11)
Under
Trigonometric Fun
(in
Just Math
)
Posted on 2004-12-06 (7 Comments)
Solution
by
Nick Hobson
(2004-12-06 21:10:32)
Under
Ordering Pairs
(in
Numbers
)
Posted on 2004-11-06 (10 Comments)
Solution
by
Nick Hobson
(2004-11-14 17:22:55)
Under
No zeroes allowed
(in
Numbers
)
Posted on 2004-08-27 (4 Comments)
Solution
by
Nick Hobson
(2004-08-27 17:03:45)
Under
Nice sum
(in
Just Math
)
Posted on 2004-08-24 (13 Comments)
re: Solution
by
Nick Hobson
(2004-09-01 14:51:37)
Solution
by
Nick Hobson
(2004-08-27 16:34:34)
Under
Perfect square?
(in
Numbers
)
Posted on 2004-07-23 (12 Comments)
re: This is to the author.
by
Nick Hobson
(2004-07-30 18:08:40)
Under
Hands On A Clock
(in
General
)
Posted on 2004-07-05 (23 Comments)
re(2): Solution
by
Nick Hobson
(2004-07-05 16:49:04)
Solution
by
Nick Hobson
(2004-07-05 14:22:23)
Under
Summing powers
(in
Just Math
)
Posted on 2004-07-01 (18 Comments)
re: Imagine
by
Nick Hobson
(2004-07-06 19:13:49)
Follow up question
by
Nick Hobson
(2004-07-03 16:40:08)
Under
Subsetting a set
(in
Numbers
)
Posted on 2004-06-29 (9 Comments)
re(3): Second part
by
Nick Hobson
(2004-06-29 14:44:03)
re: Second part
by
Nick Hobson
(2004-06-29 14:11:34)
Under
Multiplying gets a square?
(in
Just Math
)
Posted on 2004-06-26 (25 Comments)
re: No
by
Nick Hobson
(2004-06-27 04:30:49)
re(2): Solution
by
Nick Hobson
(2004-06-26 18:53:02)
Solution
by
Nick Hobson
(2004-06-26 13:31:01)
re: Solution
by
Nick Hobson
(2004-06-26 13:16:42)
Under
Fibonaccian nines
(in
Just Math
)
Posted on 2004-06-15 (10 Comments)
Solution
by
Nick Hobson
(2004-06-15 15:36:20)
Under
The right pentagon
(in
Shapes
)
Posted on 2004-06-12 (11 Comments)
Solution
by
Nick Hobson
(2004-06-13 10:26:15)
Under
Coin tossing
(in
Probability
)
Posted on 2004-06-11 (26 Comments)
Solution
by
Nick Hobson
(2004-06-11 15:43:57)
Under
Another Point In A Square
(in
Geometry
)
Posted on 2004-06-11 (16 Comments)
Generalization
by
Nick Hobson
(2004-06-12 18:57:21)
Under
Hexagonal Dilemma
(in
Geometry
)
Posted on 2004-06-02 (18 Comments)
Geometric solution
by
Nick Hobson
(2005-06-13 14:13:25)
Under
Cabin Fever
(in
Tricks
)
Posted on 2004-05-24 (8 Comments)
Absolutely square
by
Nick Hobson
(2005-09-25 21:45:31)
Under
Summing
(in
Just Math
)
Posted on 2004-04-16 (5 Comments)
Comment on official solution
by
Nick Hobson
(2004-04-27 16:15:47)
Under
Spirit of '76
(in
Just Math
)
Posted on 2004-03-14 (8 Comments)
Answer
by
Nick Hobson
(2004-03-14 13:48:27)
Under
Around the bend
(in
Geometry
)
Posted on 2004-03-13 (8 Comments)
Non-calculus solution
by
Nick Hobson
(2004-03-13 18:36:53)
Under
Looking for n
(in
Numbers
)
Posted on 2004-02-24 (13 Comments)
Not a cube
by
Nick Hobson
(2004-02-29 11:00:33)
Under
Power to the 2
(in
Numbers
)
Posted on 2004-02-20 (10 Comments)
re: Solution
by
Nick Hobson
(2004-02-23 14:02:27)
Under
Last Digit
(in
Just Math
)
Posted on 2004-01-23 (21 Comments)
re(2): Last two digits
by
Nick Hobson
(2004-01-31 07:57:31)
Last two digits
by
Nick Hobson
(2004-01-30 15:22:31)
Under
Square challenge
(in
Numbers
)
Posted on 2004-01-20 (16 Comments)
re: A hardy perennial
by
Nick Hobson
(2005-09-25 22:09:08)
Under
The Ladder
(in
Just Math
)
Posted on 2003-12-09 (20 Comments)
Another approach
by
Nick Hobson
(2004-02-23 14:47:09)
Under
Three numbers
(in
Just Math
)
Posted on 2003-11-17 (22 Comments)
Solution by Cauchy-Schwarz
by
Nick Hobson
(2004-11-12 15:56:09)
Under
00 Separate
(in
Just Math
)
Posted on 2003-10-10 (13 Comments)
Divisibility
by
Nick Hobson
(2003-10-10 15:20:14)
Under
Centrifugal Balance
(in
Shapes
)
Posted on 2003-10-04 (13 Comments)
Proposed solution
by
Nick Hobson
(2003-10-04 17:38:47)
Under
Formula None Racer
(in
Just Math
)
Posted on 2003-10-03 (35 Comments)
re(2): Divisibility
by
Nick Hobson
(2003-10-10 16:40:52)
Divisibility
by
Nick Hobson
(2003-10-10 16:20:38)
Under
e and pi
(in
Just Math
)
Posted on 2003-09-26 (7 Comments)
Comment on official solution
by
Nick Hobson
(2004-06-13 14:05:45)
By power series
by
Nick Hobson
(2003-10-09 17:08:14)
Under
Move the 6, Quadruple the Number
(in
Numbers
)
Posted on 2003-09-04 (6 Comments)
Solution
by
Nick Hobson
(2003-10-10 21:28:37)
Under
Square Deal
(in
Shapes
)
Posted on 2003-06-30 (9 Comments)
Unique chessboard
by
Nick Hobson
(2004-08-26 16:32:03)
Under
Ladders Without Snakes
(in
Just Math
)
Posted on 2003-04-21 (10 Comments)
Using similar triangles
by
Nick Hobson
(2004-06-13 12:08:42)
Under
Monkeys and Coconuts
(in
Logic
)
Posted on 2003-03-26 (41 Comments)
re(2): Comment on official solution
by
Nick Hobson
(2005-06-01 21:41:10)
Comment on official solution
by
Nick Hobson
(2004-03-04 17:46:09)
Under
Remainder
(in
Numbers
)
Posted on 2003-03-01 (17 Comments)
Analytical solution
by
Nick Hobson
(2004-07-06 14:16:40)
Under
So obvious....?
(in
Logic
)
Posted on 2003-02-19 (38 Comments)
Feynman's answer
by
Nick Hobson
(2003-10-11 14:03:03)
Under
Dances with Wolves
(in
Logic
)
Posted on 2002-12-22 (13 Comments)
Slightly different approach
by
Nick Hobson
(2004-06-13 11:19:44)
Under
Red ball... Red ball
(in
Probability
)
Posted on 2002-10-17 (17 Comments)
Comment on official solution
by
Nick Hobson
(2004-09-18 18:20:52)
Under
A busy bee
(in
General
)
Posted on 2002-04-15 (12 Comments)
von Neumann's solution
by
Nick Hobson
(2004-06-13 13:34:15)
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