Should I Send An Email Acknowledging And Correcting My Mistake In A Job Interview Assignment

[lookforanswer]

I have reached a good level in my job interview where I have been given an assignment. I submitted the assignment last week. Today, I found that I have made a small mistake in the assignment. Should I rectify the mistake and acknowledge that I had made a mistake and submit the revised document?

[Old_Geezer]

I think I'd contact the firm and offer to do so.