In a code language, some statements are coded as follows:
"Economy growth level down" is coded as "77 42 11 36".

"Slow percentage rate range" is coded as "55 91 23 82".

"Economy growth rate index range" is coded as "77 64 91 11 82".

"Economy range level down" is coded as "36 11 42 82".

What is the code for "Growth"?

Let's compare the statements to isolate the code for "Growth":
From statement (1) and statement (4):
"Economy growth level down" = 77 42 11 36
"Economy range level down" = 36 11 42 82
Common words: "Economy", "level", "down"
Common codes: 42, 11, 36
Therefore, the remaining word in statement (1) is "growth", and its remaining code is 77.

Let's double-check with statement (3):

"Economy growth rate index range" = 77 64 91 11 82
Since "Economy" and "growth" share 77 and 11, and 11 is shared with statement 4, "Economy" is 11 and "growth" is confirmed as 77.