Six digit 2008 () () can be divided by 15, so there are () such six digits

Six digit 2008 () () can be divided by 15, so there are () such six digits


First of all, consider dividing by 5, the last digit is 5 or 0, and the other digit can be 0-9. There are 20 such numbers. Then consider dividing by 3, the sum of all digits is a multiple of 3, and the sum of the last two digits is 2 or 5 or 8. Such a combination has 20, 50, 80, 05, 35, so there are 5 such 6 digits