Why does the German version of the Casio fx-991EX, the fx-991DE X, have more functions than the US version? : r/calculators
CASIO CLASSWIZ fx-991SP X Iberia
UP ACES on Twitter: "Only PRC-approved scientific calculators and Casio fx-991es are allowed to be used in the National Civil Engineering Quiz 2018. Casio Classwiz fx-991 EX is NOT allowed. #NCES2018 #BuildForTheNation
CASIO CLASSWIZ FX 991 EX SCIENTIFIC CALCULATOR by ESHUN KWESI APPIAH BUSINESS SOLUTIONS, Made in Ghana