[1][3] He attended Martin Van Buren High School and Indiana Tech,[1] and went to St. John's University for his master's degree in Mathematics.
[1] Appelbaum earned his doctorate from Poly Tech / NYU [1] He was an active member of the Morristown Jewish Center.
[4] Appelbaum was the owner of a US Patent "Fire Prevention Systems and Methods – A system or method that has an air distribution system configured to provide nitrogen into a room to reduce an oxygen concentration level within the room below a desired oxygen concentration level such that the atmosphere in the room fails to provide sufficient oxygen to sustain combustion".
[5] Appelbaum wrote numerous academic articles including "A heuristic method for estimating time-series models for forecasting" which was under "Applied Mathematics and Computation".
[1] He competed in the 1964 Olympic Trials, losing in the final match to eventual Olympian once to Senator and Governor Ben Campbell.