👉 Tray math is a visual and intuitive method for solving combinatorial problems, particularly those involving permutations and combinations. It uses a grid or "tray" system where each cell represents a specific arrangement or selection from a set of items. By filling in the grid with numbers that indicate how many ways each item can be chosen or arranged, you can systematically count the total number of possible outcomes. This method simplifies complex calculations by breaking them down into manageable, step-by-step steps, making it easier to visualize and solve problems that might otherwise seem daunting.