Which sign or symbol will you use to lock cells for absolute cell reference

Dollar ($) is used to lock cells for absolute cell reference.

Explanation:

There is two type of referencing in MS Excel. Relative reference and absolute reference. These are used for copying formula to other cells.

Relative reference

If we want to keep change the formula in the for different cell while copying in different cells we use relative reference.

For example

we want to add value of A1 and B1 and store it into C1. We want to copy this formula into next rows by changing the cell reference as in C2=A2+B2, C3=A3 + B3, we use relative referencing. There we just copy the formula to C2, C3 and so on, the formula remains same but cell references will changed.

absolute reference

If We want to to copy same formula with same cell references into different cells, we use look cell formula using absolute reference. We just put the $ sign before cell reference, it will make that cell absolute. Now where we copy and paste that cell the formula and references remains same.

For Example

we want to add two values of A1 and B1 into C1. we use C1=A1+B1. To make this cell absolute, we use $ sign as, C1 = A$1 + B$1. Now this cell becomes absolute. Now if we want to copy the formula in C2, so C2 = A$1 + B$1.

There cell is different bu in both cells formula and cell references are same.