Once I failed a programming test on factorial. I was younger and less experienced in interviews than I am now, nerves got the better of me. I implemented the t

Once I failed a programming test on factorial. I was younger and less experienced in interviews than I am now, nerves got the better of me. I implemented the thing, but with plus in place of multiplication. Before that, I realised I was struggling and asked the interviewer whether it was + or *, that was probably the moment he failed me.