Question

Why do you need to enter the first two values of a number series?

Answer 1

Answer:

Click and hold to highlight all the cells with your numbers. To do so, hold your cursor in the top left of the first cell, and drag it down to the last cell with a number in it (in the first example, the cell with the “2” in it.) ... You can create the number series vertically down a column, or horizontally across a row

Answer 2

Answer:

The first number is we have to enter because after first two values ,the computer know the series