Games | Jokes | Trivia | Brainteasers

Polynomial Images, February 2004, UNSOLVED

Root Manifest, February 2004, solved by Michael Viscardi and Ron L.J. van den Burg

Cosine Inequality, January 2004, solved by Ron L.J. van den Burg

1 > -1, January 2004, solved by Ron L.J. van den Burg

Caught in the Hemisphere, January 2004, solved by Ron L.J. van den Burg

MVT Sister, January 2004, solved by Michael Viscardi

Encoding Fibonacci, December 2003, solved by Mike Skirvin

Squares and primes, November 2003, solved by Ron L.J. van den Burg

Matrix Bound, November 2003, solved by Sean Simon and Stefan Dorsett

Quasiperfect Number, November 2003, solved by Mike Skirvin

Counting 1's, October 2003, solved by Michael Viscardi

Monte Hall Strikes Back, December 2002, solved by Siqi Chen

The Invertible Ring, January 2003, solved by Henry K. Shin

Bend The Triominoes, December 2002, solved by Henry K. Shin

A Semi Harmonic Series, November 2002, solved by Henry K. Shin

Lines and Locus, November 2002, solved by Henry K. Shin

Cevians, October 2002, solved by Henry K. Shin

Chicken McNumbers, September 2002, solved by Ryan Flarity

Tower of Powers, December 2001, solved by Henry K. Shin and Jonathan Desler

Plutoball, November 2001, solved by Angela M K Foudray

You Can't Resist, November 2002, solved by Stefan Dorsett

Perfect Squares, October 2001, solved by Stefan Dorsett

ACME Containers, October 2001, solved by Stefan Dorsett

Count Your Friends, October 2001, solved by Jan Schellenberger and Stefan Dorsett

Commutative Exponents, October 2001, solved by Stefan Dorsett

Complicated Cotangents, October 2001, solved by Dave Newquist

Friends & Enemies, May 2001, solved by Dave Newquist

It's Only a Matter of Time, March 2001, solved by Dave Newquist

A Positively Puzzling Proof, March 2001, solved by Dave Newquist

Derivative of the Year, February 2001, solved by Dave Newquist

Crazy Cubes, January 2001, solved by Catherine Whitt

Cherry Slurpee, August 1999, solved by Neil Bruce

A Winter Wonder Land, October 1998, solved by Tamsen Dunn

Shooting Hoops, September 1998, solved by Barry Smith

Marching Ants, August 1998, solved by Kent Hartman

The Paper Cup, August 1998, solved by Daniel Giaimo

Monkey Business, August 1998, solved by John Vidaver

The Missing Dollar, August 1998, solved by Tom Supple

The Three Sons, July 1998, solved by Daniel Giaimo

The Temperature Problem, June 1998, solved by Shantanu Chakrabar