To determine how many digits the 31.2 and 41.2 digit display meters have, we consider what the term “digits” means in this context.
- **31.2 digit display meter**: This indicates that the meter can display values with a precision of 31 digits, plus 2 digits for the decimal point. Therefore, it can display numbers up to \(10^{31}\), with the total number of digits being **31**.
- **41.2 digit display meter**: Similarly, this meter can display values with a precision of 41 digits, plus 2 digits for the decimal point, resulting in a total of **41** digits.
So, the 31.2 digit display meter will have **31 digits**, and the 41.2 digit display meter will have **41 digits**.