Using System; static int Main() {<span> int n = 1;</span> <span> for (int i = 1; i <= 5; i++) </span><span> { </span><span> for (int z = 1; z <= i; z++)</span><span> {</span><span> Console.Write(n); </span><span>Console.Write("\t"); </span><span>} </span><span>n++; </span><span>Console.Write("\n"); </span><span>}</span>return 0; <span>}</span>