Determine a 9-digit positive integer that uses each of the decimal digits from 1 to 9 exactly once, such that:(adsbygoogle = window.adsbygoogle || []).push({});

(i) The sum of the digits 1 and 2 and all the digits between them is 9.

(ii) The sum of the digits 2 and 3 and all the digits between them is 20.

(iii) The sum of the digits 3 and 4 and all the digits between them is 45.

(iv) The sum of the digits 4 and 5 and all the digits between them is 18.

(v) The sum of the digits 8 and 9 and all the digits between them is more than 32.

(vi) The 8^{th}digit is less than the 2^{nd}digit.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Some Summed Digits In A 9-Digit Positive Integer

**Physics Forums | Science Articles, Homework Help, Discussion**