1. Department of Mathematics and Statistics, Woman University, Swabi, Khyber Pakhtunkhwa, Pakistan
2. Department of Mathematics, University of Malakand, Chakdara, Dir Lower, Khyber Pakhtunkhawa, Pakistan
3. Department of Mathematics Education, University of Education Winneba Kumasi-(Kumasicompus), Kumasi 00233, Ghana
4. Department of Mathematics, College of Science, King Khalid University, 61413 Abha, Saudi Arabia