207.Three Positive Integers Summing to 25
★★★combinatoricsOptiver
How many ordered triples of positive integers add up to 25?
Sign in to submit an answer and track it toward your stats.
Sign inHint
Line up 25 identical units and choose where to place the dividers between them.
Want timed drills, mental math, and a market-making game too? Try the full practice suite →