title: Formula for returning duplicated value in excel
body: <p>I need to find duplicated data regardless of its order. I am dealing with 
  17,000 dynamic data and I don’t want to use remove duplicate, use filter feature in excel or conditional formatting. I just want the formula for this. It would truly be more than appreciated if someone could give me a formula. </p>
  
  <p>Example as follows where order of duplicates does not matter:
  <img src="https://i.stack.imgur.com/ghgI7.jpg"></p>