What is the formula to be C column result?

Users questions: Annex EXCEL table
Experts answer: = IF (COUNTIF ($ A: $ A, RIGHT (B1) & LEFT (B1)) 0, B1, "") this is the law, is not it? Not, you have to say column C with column A and B, the relationship column. Accessories: C As a result. Rar
  • This information provided by the users.Thanks!