public void Should_Return_Whether_A_Number_Is_Bigger_Than_Sum_Of_Last_Two_Numbers(double n1, double n2, double n3)
        {
            //Given
            var exercises9 = new Exercise9();

            //When
            var result = exercises9.FirstGreatterThanSumBetweenLastBoth(n1, n2, n3);

            //Then
            Assert.True(result);
        }
        public void Should_Return_A_Word_Composed_With_Letters_In_Even_Position_In_Array(string[] letters, string expectedResult)
        {
            //Given
            var exercise9 = new Exercise9();

            //When
            var result = exercise9.SumStrings(letters);

            //Then
            Assert.Equal(expectedResult, result);
        }