Sulfiah, S.K., Cholily, Y.M. and Subaidi, A. 2021. Professional competency: Pre-service mathematics teachers’ understanding toward probability concept. JRAMathEdu (Journal of Research and Advances in Mathematics Education). 6, 3 (Jun. 2021), 206–220. DOI:https://doi.org/10.23917/jramathedu.v6i3.13779.