What can we do when we encounter a wrong question in the challenge others section?

Question

I found a wrong question in php challenges, but i don't see where can I report it. The question is: what is the output of this code?
$result 2."2";
echo 2.$result-$result;
by Wesley Hendricks

Answer 1

after your opponent has completed/declined the challenge you can press the 'view correct answers' button, go to your questions tab and report it (top right corner)