Gauss 7 · Past Contest Questions Counting & Combinatorics Module 05 of 06 · Full Solution Edition Module 05 of 06 Problems 25 total Source Gauss 7 Past Questions Format Solution Edition Contents § 5.1 Forming NumbersQ1–Q7 § 5.2 Counting FiguresQ8–Q11 § 5.3 Number MatrixQ12–Q15 § 5.4 HomeworkQ16–Q25 § 5.1 · Digit-by-Digit Counting Forming Numbers…