The expression "i=6" indicates that the variable i is assigned the value of 6. In programming and mathematics, this is a common way to define or initialize a variable. The letter i is often used as a placeholder for integers, especially in loops or sequences. In this case, the value 6 can represent various things depending on the context. For example, it could denote the sixth item in a list, the number of iterations in a loop, or simply a numeric value used in calculations. Understanding variable assignment is fundamental in fields like computer science and mathematics.