Passed Yellow Belt GAQM

I took the exam for GAQM yellow belt, just nearly passed with 72% result were the passing grade is 70%. Somewhat the question are helpful with sixsignal central were out of 50 questions mainly 20 questions went out other question never asked in the sixsigma central practice question, good thing I still study and partly sixsigma central till help me to practice some of their practice questions. Thanks!