1. I am a 9 digit whole number.

  2. I am an even number.

  3. Each of my digits appears exactly three times.

  4. Each digit is greater than 6.

  5. All the digits in each period are the same.

  6. I am greater than 800,000,000.

  7. I am divisible by 3.

  8. I am divisible by 4.

  9. My millions digit is 9.

  10. My thousands digit is 7.


      Who am I?











Answer: I am 999,777,888.
The solution can be determined by clue 6.