Formula Method The most obvious way to increment a number in Excel is to add a value to it. Start with any value in cell A1, and enter "=A1+1" in cell A2 to increment the starting value by one.

But when I entered the numbers with more than 15 digits, Excel replaced all the digits after the 15th digit with 0. This problem can be fixed simply by adding an apostrophe before the number.

However, Excel's random number functions are volatile, meaning they change constantly. In this article, I'll show you how to generate and fix random numbers and remove duplicates.