Disabling characters in numeric question type?

Disabling characters in numeric question type?

by Eva Koperdakova -
Number of replies: 0

One of teachers objected numeric type of question not working properly.

The thing she is objecting to is that, when correct answer set to for example 20 or 20.0 not only those answers are accepted, but 20abc as well. Units are not used, nor graded.

How to disable characters to get one and only correct answer only numbers?

Eva

Average of ratings: -