PRMO (Pre Regional Math Olympiad) by Cheenta In this section, we discuss problems, solutions and sequential hints from Pre – Regional Math Olympiad India (PRMO). Related Course Content Expand All PRMO 2019 PRMO 2019 - Take it as a test 1 Quiz Expand Lesson Content PRMO 2019 Digital sum of largest prime factor (PRMO problem -3, 2019) Quadratic and Functional Equation (PRMO 2019, Problem 2) pythagorean triples & largest prime factor (PRMO problem -6, 2019) Derangement with repetition (PRMO 2019, Problem 27) Sample Lesson Incenter and area (PRMO 2019, Problem 28) Median and Angle Bisector (PRMO 2019, Problem 29) Subsets with equal sum . (PRMO problem -30, 2019) PRMO 2012 Box Function in PRMO 2012 Problem 18 Sample Lesson Functional Equation PRMO 2012 Problem 16