public void Fuc2() { Assert.AreEqual(2, YourTasksHere1.Fuc(2)); }
public void Fuc4() { Assert.AreEqual(24, YourTasksHere1.Fuc(4)); }
public void Fuc1() { Assert.AreEqual(1, YourTasksHere1.Fuc(1)); }
public void Fuc3() { Assert.AreEqual(6, YourTasksHere1.Fuc(3)); }