Saragih, K. “THE EFFECT OF OPTION NUMBERS ON THE ITEM INSTRUMENTS OF BELIEF ABOUT MATHEMATICS FOR JUNIOR HIGH SCHOOL STUDENTS TOWARD THE MAXIMUM RELIABILITY”. JISAE: Journal of Indonesian Student Assessment and Evaluation, Vol. 3, no. 1, Nov. 2017, pp. 24 -31, doi:10.21009/jisae.v3i1.4858.