duh vs no duh

duh

intj
  • Disdainful indication that something is obvious. 

  • Indication of mock stupidity. 

no duh

intj
  • An expression or exclamation that something is exceedingly obvious or apparent, or that one would have to be extremely foolish not to realize something immediately. 

How often have the words duh and no duh occurred in a corpus of books? (source: Google Ngram Viewer )