- Number Theory
- Problem Solving (Misc.)
When the letters of the alphabet are assigned their integer values (A = 1, B = 2, C = 3, …, Z = 26), the word-product for JULY is the product of the letter-values for each of the letters in JULY. When...
- Number Theory
Here are a few problems to keep your number sense sharp during the summer months. What is the greatest positive three-digit integer that is divisible by 5, 7 and 9? We know that any three-digit number...
- Number Theory
- Probability, Counting and Combinatorics
- Problem Solving (Misc.)
- Solid Geometry
The weekend has just begun, and Derek wants to build a snowman either on Saturday or Sunday, but he can only build a snowman if it snows. There is a 1/2 probability that it snows on Saturday, and a 1...