For A Class Student Consisting Of Indexer Which Among The #458

 student a = new student(); a[1,2] = 20; 

 class student { int[,] p = new int[6, 6]; public property WriteOnly int this[int i, int j] { set { a[i, j] = value; } } }

 class student { int[,] a = new int[6, 6]; public int this[int i, int j] { set { a[i, j] = value; } } } 

 class student { int[,] a = new int[6, 6]; public int property WriteOnly { set { a[i, j] = value; } } }