AutoFill can fill a series when a pattern is established with two or more cells, allowing the feature to continue a sequence across a range of cells.
The AutoFill feature will fill a series when you establish a pattern with two or more cells. This means that once you have input data into two cells that establish a recognizable pattern, AutoFill can be used to continue that pattern for a selected range of cells. For instance, if you enter '1' in the first cell and '2' in the second cell, AutoFill can be used to incrementally continue this series (3, 4, 5, etc.) across the subsequent cells.
An explanation of its use can be provided step-by-step (Solution A), or through the use of a function available in calculators like the TI-83, 83+, or 84 (Solution B). Regardless of the method, the main answer for the established pattern requirement for AutoFill is with two or more cells, which is option 3).