Let x, y, and z be integers. Write a proof by contraposition to show that
(a) if x is even, then x + 1 is odd.
(b) if x is odd, then x + 2 is odd.
(c) if x2 is not divisible by 4, then x is odd.
(d) if xy is even, then either x or y is even.
(e) if x + y is even, then x and y have the same parity.
(f) if xy is odd, then both x and y are odd.
(g) if 8 does not divide x2 − 1, then x is even.
(h) if x does not divide yz, then x does not divide z.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.