Nice! This year I opted for the upward trajectory.
It seems like an interesting puzzle: For any given year, how many ways are there to express the numerical value of that year as an arithmetic expression using the nine digits, where every digit appears only once and digits are in either ascending or descending order?
98*76-5432*1
Nice! This year I opted for the upward trajectory.
It seems like an interesting puzzle: For any given year, how many ways are there to express the numerical value of that year as an arithmetic expression using the nine digits, where every digit appears only once and digits are in either ascending or descending order?