Such as: -3,-1, 1, 3, 5, 7. ......
2. The number obtained by dividing two numbers is "quotient".
If 8 divided by 4 equals 2, 2 is the quotient.
In addition, the first floor is not right: 2, 4, 6 ... such numbers are called even numbers, which means even numbers.
The second floor is also wrong: a number divided by 2 has a remainder, and the remainder is 1, which is called odd number.