Number string puzzle
8 digit number: first digit is 9 minus 8th digit. second digit is 9 minus 7th digit. third digit is 9 minus 6th digit. fourth digit is 9 minus fifth digit. All 8 digits are different. None of the digits are zero. None of the digits are 9. The second and first digit differ by 2. The second and third... Sign in to see full entry.