## WeBWorK Main Forum

### errors in answer blanks in webwork 2.7

by Darwyn Cook -
Number of replies: 1
We are using a brand new install of 2.7 installed from vanilla live. We have been having some issues with problems that we have used several times in the past. So far I have been able to fix them, but this one has me stumped.

Unfortunately it is a long problem, but I will paste the code and output below. This issue we are having is that a student is typing in a numeric answer, but WeBWorK is interpreting it as an interval.

\begin{align} y= &c_0\left(\hbox{\{ ans_rule(2) \}}+\hbox{\{ ans_rule(5) \}}x^2+\hbox{\{ ans_rule(5) \}}x^3+\hbox{\{ ans_rule(5) \}}x^4+\cdots\right)\\ &+\\ &c_1\left(\hbox{\{ ans_rule(5) \}}x+\hbox{\{ ans_rule(5) \}}x^2+\hbox{\{ ans_rule(5) \}}x^3+\hbox{\{ ans_rule(5) \}}x^4+\cdots\right) \end{align}