Letters refer to columns.
It is algebra that represents numbers by letters which are called variables.
It is called an alphanumeric password.
Sudoku
algebra? The unknown numbers of which you speak are called variables. "algebra" oxford dictionary definition = investigation of properties of numbers using letters etc as general symbolsAll branches of mathematics have the opportunity to utilize letters instead of numbers. This is called a variable and they are found in every branch of mathematics.
Letters refer to columns.
an area definded by numbers and letters
text
It is algebra that represents numbers by letters which are called variables.
It is called an alphanumeric password.
algebra
A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.A cell reference or a cell address.
Columns are identified by letters and rows are identified by numbers. A column letter and a row number identify a cell by providing what is called a cell address or cell reference. So, for example, cell C52 is in column C and row 52.
Sudoku
It is algebra that uses letters to represent numbers and also Roman numerals.
number line?
In general it is called alphanumeric.