1. Department of Mathematics, CUI, Vehari Campus, Pakistan
2. Math Center, House No 87, Rahmanyia Colony, Vehari, Pakistan
3. Department of Mathematics and Statistics, College of Science, King Faisal University, Al-Hasa 31982, Saudi Arabia
4. Department of Quantitative Methods, School of Business, King Faisal University, Al-Hasa 31982, Saudi Arabia