Department of Mathematics, College of Education, Dr. John Garang Memorial University of Science and Technology, Bor, South Sudan
Department of Mathematics, Ministry of Education, Muscat, Sultanate of Oman
Department of Mathematics, College of Science, Princess Nourah bint Abdulrahman University, Al-Riyadh, KSA
Department of Mathematics, Faculty of Science, Jazan University, Jazan, KSA
Copyright © 2019 Simon Joseph, Ahmed Sufyan, Hala Taha, Ranya Tahir et al. This is
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