solve with explanation

Question 17 4 pts Consider the following theorem: If x is an odd integer, then x + 2 is odd. Give a proof by contraposition of this theorem. Edit View Insert Format Tools Table 12pt v Paragraph v Question 18 4 pts Consider the following theorem: If x is an odd integer, then x + 2 is odd. Give a proof by contradiction of this theorem. Edit View Insert Format Tools Table 12pt v Paragraph v : Question 19 4 pts Show that at least 3 of any 25 days of the year must fall in the same month of the year. (Hint: proof by contradiction) Edit View Insert Format Tools Table 12pt v Paragraph v : 4 pts Question 20 Show that if n is a positive integer and nis odd, then n is odd. using: Proof by contraposition Edit View Insert Format Tools Table 12pt v Paragraph v