17. Express each of the following statements using predi- cates and the quantifiers V and 3: (b) If n is not a multiple of 3, then n 1 is a multiple of 3. . 25. Form the contrapositive of each of these statements: (e) If a triangle has either two equal sides or two equal angles, then it is an isosceles triangle. 26. Form the converse of each of the statements in Exercise 25. (e) If a triangle has either two equal sides or two equal angles, then it is an isosceles triangle. 27. Form the inverse of each of the statements in Exercise 25. (e) If a triangle has either two equal sides or two equal angles, then it is an isosceles triangle