M Adabitabar Firozja - Academic member, Department of mathematics , Qaemshar Branch , Islamic Azad University , Qaemshahr , Iran
Tahereh. Houlari - MA degree, School of Mathematics and Computer Sciences , Damghan University , Iran,

The ranking fuzzy numbers plays a main rules in many applied models in the world and in particular decision-making procedures. In any proposed method by the other researches may exists some shortcomings. So we are going to present a new method based on the ranking the fuzzy number and real number. The problem of ranking the fuzzy number and real number is proposed with ranking function and then this approach is extended to the ranking of two fuzzy numbers with ranking function.

Fuzzy numbers, Ranking functions, Generalized left right fuzzy numbers