public static void Main()
int [,] arr = new int[2, 3];
Random random = new Random();
for(int i = 0; i < 2; i++){
for(int j = 0; j < 3; j++){
arr[i, j] = random.Next(1, 10);
Console.Write(arr[i, j]+" ");
int [] array = new int[10];
for(int i = 0; i < 10; i++){
array[i] = random.Next(1, 10);
Console.Write(array[i]+" ");
Console.WriteLine(Array.IndexOf(array, 1));
for(int i = 0; i < 10; i++){
Console.Write(array[i]+" ");
for(int i = 0; i < 10; i++){
Console.Write(array[i]+" ");