1. Department of Mathematics, COMSATS University Islamabad, Vehari Campus, Vehari 61100, Pakistan
2. Math Center, Rahmanyia Colony, Vehari 61120, 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