November 21, 2021: Weighted Averages
November 22, 2021: Overlapping Triangles
December 9, 2021: Sum of Sequential Squares
December 18, 2021: Greatest Odd Factor
January 10, 2022: Counting Combinations of Coins
February 12, 2022: Burning Wicks
October 26, 2022: Dots in Email Addresses