Can you help me? This is about proof.

1. Give a complete proof for the statement "The sum of two odd integers is an even integer\". 2. Prove that the following statement is false \"There exists an integer m such that m > 3 and 2m2 5m + 2 is prime". Hint: ~(p n (1)2 mp v ~q E ,1) ~ mg 3. Find a counterexample for the statement \"If m at n are positive integers and mo is a perfect square, then both m and n are perfect squares\". (A positive integer b is a perfect square if and only if b : a2 for some integer a)