55.Rolling to Three Hundred
★★★random walksJane Street
A fair 30-sided die numbered 1 to 30 is rolled repeatedly, adding results to a running total, and you stop once the total reaches at least 300. What is the most likely final total?
Sign in to submit an answer and track it toward your stats.
Sign inHint
The final total is the first value at or beyond the target. The smallest possible landing spot can be reached from the widest range of launch points.
Want timed drills, mental math, and a market-making game too? Try the full practice suite →