Published online by Cambridge University Press: 22 January 2016
In a previous investigation [1], the author has studied finite groups  of an order g = pg 0 where p is a prime and g 0 an integer not divisible by p. This work has been continued by H. F. Tuan [5]. Let t denote the number of conjugate classes of
 of an order g = pg 0 where p is a prime and g 0 an integer not divisible by p. This work has been continued by H. F. Tuan [5]. Let t denote the number of conjugate classes of  which consist of element of order p. Tuan dealt with the groups
 which consist of element of order p. Tuan dealt with the groups  for which t≦2 and which have a faithful representation of degree less than p - 1. We shall assume here that t≧3. We shall also suppose that
 for which t≦2 and which have a faithful representation of degree less than p - 1. We shall assume here that t≧3. We shall also suppose that  does not have a normal subgroup of order p. We state here two results. We shall show (Corollary, Theorem 1) that if / is a faithful irreducible character of
 does not have a normal subgroup of order p. We state here two results. We shall show (Corollary, Theorem 1) that if / is a faithful irreducible character of  of degree n which has T>1 conjugates over the field of the g 0-th roots of unity, then
 of degree n which has T>1 conjugates over the field of the g 0-th roots of unity, then
 