A Mean Inequality: 10798. - Edward Newman; Li Zhou 001 (Am. Math. Mon., 2001)

Relatives of Erdos-Mordell: 10814. - Razvan A. Satnoianu; Li Zhou 001 (Am. Math. Mon., 2001)

A Property of the Binary Sum of a Family of Sets: 10865. - David Beckwith; Li Zhou 001; David Callan (Am. Math. Mon., 2002)

Parallelogram Circumcenters: 10874. - Wu Wei Chao; Li Zhou 001 (Am. Math. Mon., 2002)

Another Collinearity Result for Triangles: 10845. - Ciprian Demeter; Li Zhou 001 (Am. Math. Mon., 2002)

Nondivisibility of Binomial Coefficients: 10842. - Bruce Reznick; Li Zhou 001; et al. (Am. Math. Mon., 2002)

Distances to the Sides: 10929. - Lajos Csete; Li Zhou 001 (Am. Math. Mon., 2003)

A Continued Fraction for an Arctan Difference: 10926. - Harold G. Diamond; Li Zhou 001 (Am. Math. Mon., 2003)

Hidden Arctangents: 10901. - M. J. Knight; Li Zhou 001 (Am. Math. Mon., 2003)

A Tetrahedron with All Faces Congruent: 10934. - Vasile Mihai; Li Zhou 001 (Am. Math. Mon., 2003)

Problem 11031. - Li Zhou 001 (Am. Math. Mon., 2003)

Cosine Inequalities: 10962. - Mihály Bencze; Li Zhou 001 (Am. Math. Mon., 2004)

Sliding Dominoes: 10960. - Oliver Eng; Li Zhou 001 (Am. Math. Mon., 2004)

A Sticky Problem: 10951. - Sung Soo Kim; Li Zhou 001 (Am. Math. Mon., 2004)

A Cyclotomic Sum: 10937. - David G. Wagner; Patrick Corn; Li Zhou 001 (Am. Math. Mon., 2004)

A Combinatorial Sum Goes on Tangent: 11044. - Michel Bataille; Li Zhou 001 (Am. Math. Mon., 2005)

Sines in a Triangle: 11015. - Ovidiu Furdui; Li Zhou 001 (Am. Math. Mon., 2005)

Triangles Inscribed in a Circle: 11027. - H. Reuvers; Li Zhou 001; A. Engle (Am. Math. Mon., 2005)

A Majorization Consequence: 11080. - Razvan A. Satnoianu; Li Zhou 001 (Am. Math. Mon., 2005)

Lengths of Wrapped Curves: 11064. - John E. Wetzel; Li Zhou 001 (Am. Math. Mon., 2005)

Problem 11127. - Li Zhou 001 (Am. Math. Mon., 2005)

Problem 11187. - Li Zhou 001 (Am. Math. Mon., 2005)

Monster Mean Tamed: 11031. - Li Zhou 001; Robin Chapman (Am. Math. Mon., 2005)

Cevians and Centroids: 11105. - Juan-Bosco Romero Márquez; Rick Luttmann; Miguel de Guzman; G. Donald Chakerian; Li Zhou 001 (Am. Math. Mon., 2006)

An Inequality of Cosines and Sines: 11127. - Li Zhou 001; Michael Avidon (Am. Math. Mon., 2006)

A Determinant by Möbius Inversion: 11179. - David Beckwith; Li Zhou 001 (Am. Math. Mon., 2007)

Tiling 4-Rowed Rectangles with Dominoes: 11187. - Li Zhou 001; Christopher Carl Heckman; Jerry Minkus; et al. (Am. Math. Mon., 2007)

"The Ballot Problem in Disguise", in Disguise: 11249. - David Beckwith; Michael Avidon; Li Zhou 001 (Am. Math. Mon., 2008)

A Strip Problem: 11247. - Jürgen Eckhoff; Li Zhou 001 (Am. Math. Mon., 2008)

From Integral to Derivative: 11313 [2007, 744]. - Cezar Lupu; Li Zhou 001 (Am. Math. Mon., 2009)

Recurrent Proofs of the Irrationality of Certain Trigonometric Values. - Li Zhou 001; Lubomir Markov (Am. Math. Mon., 2010)