0,1,2,3,4,5 are the even numbers of 3 digits without repetition?

0,1,2,3,4,5 are the even numbers of 3 digits without repetition?

Classify first
If the first number is even
Then there are two choices for the hundred, 2,4 (0 can't be a hundred), and then there are two choices from one to two (a total of three even numbers, one is chosen to be a hundred), and finally there are four choices for the ten
So if the hundreds are even, there are 2 * 2 * 4 = 16 numbers
If the hundreds are odd, there are three choices (1, 3, 5). If you are even, there are three choices (0, 2, 4). If the tens are random, there are three choices
In this way, the number of odd hundreds is 3 * 3 * 4 = 36
There are 52 numbers in all