University of Isfahan Mathematics and Society 2345-6493 7 4 2023 02 20 The codegrees of real-valued Irreducible characters of finite groups The codegrees of real-valued Irreducible characters of finite groups 85 89 27488 10.22108/msci.2023.136265.1553 FA Zeynab Akhlaghi Faculty of Mathematics and Computer Science, Amirkabir University of Technology, Tehran Journal Article 2022 12 30 In this note we show that if every codegree of real-valued irreducible characters of a finite group $G$ is either a $2$-number or $2'$-number, then $G$ is solvable In this note we show that if every codegree of real-valued irreducible characters of a finite group $G$ is either a $2$-number or $2'$-number, then $G$ is solvable codegrees of irreducible characters real-valued irreducible characters solvable groups https://math-sci.ui.ac.ir/article_27488_d554562b1805acade1f92254ac359cdb.pdf