Final answer:
In the =SUM(number1 [,number2][,number3], ...) formula, number 1, number 2, and number 3 may be numbers or formulas.
Step-by-step explanation:
In the =SUM(number1 [,number2][,number3], ...) formula, number 1, number 2, and number 3 may be numbers or formulas. This function is used in spreadsheet software like Microsoft Excel to add up a series of numbers or calculations. For example, if you have the formula =SUM(1, 2, 3), the result would be 6. You can also use cell references in the formula, such as =SUM(A1, B1, C1) to add up the values in those cells.