Index Of Up 2009 (90% Legit)

Suppose we have a text that reads: "GUR PENML XRL VF ZL FRPERG CBFG". We can calculate the IC of this text using the formula above.

After calculating the IC, we get a value of 0.065. This suggests that the text is likely encrypted. index of up 2009

The Index of Up 2009, or Index of Coincidence (IC), is a mathematical technique used to analyze the frequency distribution of letters in a text. It was first introduced by William Friedman and his wife, Elizebeth Friedman, in the 1920s. The IC is used to determine if a text is written in a natural language or if it's encrypted. Suppose we have a text that reads: "GUR