I'm using MS Excel 2007. I would like to restrict the data entry of some cells in a worksheet to certain numeric values and also forbid the entry of formulas in those cells.

As an example, given this data

```
| A | B | C
---+----+----+-----
1 | 4 | 26 |
2 | | |
```

I would like to only allow literal numeric values greater than 100 to be entered in `C1`

.

I tried using `Data`

→`Data Validation`

→[`Allow`

=`Decimal`

, `Data`

=`Greater than`

, `Minimum`

=`100`

] but this also allows certain formulas to be inputted. If you try entering `=A1*B1`

in cell `C1`

, because it evaluates to more than 100, the data validation allows the formula.

How do I enforce this extra no-formula restriction?