This math topic focuses on calculating factorial expressions, specifically those where a single factorial is divided by a factorial with a difference in its argument (symbolized as "n! over (n-r)!"). The problems are designed to test understanding of how factorial calculations interact within the format of division, particularly in scenarios relevant to probability and statistics. Each question presents a factorial divided by another factorial with a subtracted value inside the bracket, challenging students to apply factorial properties and arithmetic operations to find the correct value.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.