There is a four digit number on the dog's collar. The last two digits constitute the smallest two even digits. The first digit is larger than the second digit and the first two digits What is the number of the dog neck cover

There is a four digit number on the dog's collar. The last two digits constitute the smallest two even digits. The first digit is larger than the second digit and the first two digits What is the number of the dog neck cover

The minimum even number of two digits is 10. The first two digits are less than 5 times of the last two digits, that is, less than 5 times of 10, that is, 15, so the four digit number is 1510