**Mathematics Department**

**Student Colloquium Series**

*PIZZA SERVED from 11:30 -11:55 ***in front of Hislop Family Auditorium**

__TALK STARTS AT 12:00 PM__

**“**1, 2, skip a few**”**

*Presented by*

*BRETT COLLINS*

**Department of Mathematics – Bucknell University**

**Thursday, February 17, 2022**

__12:00 P.M.__ __HOLMES HALL – 116 Hislop Family Auditorium__

**Abstract: One of the most basic problems in mathematics is simply counting how many there are of something, such as the number of Sudoku puzzles or the number of arrangements of a Rubik’s Cube, yet this is often notoriously difficult. In this talk, I’ll show through examples how symmetry can be used in many problems like this and how we can easily generalize these ideas to more difficult counting problems. One thing that you can certainly count on is having mathematical fun. **