Interview question about ACLs that I've never heard of before...

Let's say you have an IP range, for instance 192.168.0-192.168.100

Is it possible to create an ACL statement that will permit only the even numbers in the third octet of this block? That is, 192.168.2 192.168.4 192.168.6...192.168.100

I have never heard a question like this before. And I was wondering if this was something that was possible using just the Cisco syntax command line? Or is this something done with a script?

This was an interview question asked to a candidate. The interviewer (my snr network engr) is more of a programmer to be honest and knows more scripting/coding than networking.