2. Given odd integer and even integer n (m=2k + 1 and 1 = 2k )
Prove: mn is even number (mn = 2r)

3. Given: n is even number (n = 2k)
Prove: 3n + 5 is an odd number. (3n + 5 =2m + 1)

learning task 3 week 8 po pls