Document Type : Original Research Article
Authors
1 Department of Mathematics, Faculty of Science, Sokoto State University, Sokoto. Nigeria
2 Department of Mathematical Sciences, Faculty of Physical Sciences, Bayero University, Kano, Nigeria
3 Operation Research Group, Bayero University, Kano, Nigeria
4 School of Mathematical Sciences, Universiti Sains Malaysia, Penang, Malaysia
5 Department of Mathematics, Yusuf Maitama Sule University, Kano, Nigeria
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