We have introduced higher order generalized hybrid B -(b,?,?,??,?r)-invex
function. Then, we have estabilished higher order weak, strong and strict
converse duality theorems for a multiobjective fractional programming problem
with support function in the numerator of the objective function involving
higher order generalized hybrid B -(b,?,?,??,?r)-invex functions. Our
results extend and unify several results from the literature.