1. Nineveh Education Directorate, Ministry of Education, Nineveh, Iraq
2. Department of Mathematics, College of Education for Pure Sciences, University of Basrah, Basrah, Iraq
3. Computer Science Department, College of Computer Science and Mathematics, University of Mosul, Mosul, Iraq
4. Faculty of Information Technology, Ajloun National University, Jordan
5. Al-Imam University College, Iraq
6. Department of Statistics, Injibara University, Ethiopia