Try this:
int[,] result = {{ 2,3,7 }, {2,3,5 } ,{2,3,6},{ 2,4,7 }, {2,4,5 } ,{2,4,6}};
List<int[]> numberArrays = new List<int[]>();
for (int i = 0; i < result.GetLength(0); i++)
{
int[] temp = new int[result.GetLength(1)];
for (int n = 0; n < temp.Length; n++)
{
temp[n] = result[i, n];
}
numberArrays.Add(temp);
}