Description: 2 does not divide 3. That means 3 is odd. (Contributed by AV, 28-Feb-2021) (Proof shortened by Steven Nguyen, 3-May-2023)
Ref | Expression | ||
---|---|---|---|
Assertion | n2dvds3 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3halfnz | |
|
2 | 3z | |
|
3 | evend2 | |
|
4 | 2 3 | ax-mp | |
5 | 1 4 | mtbir | |