Hard
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The Subway Frequency

16,437 solved 47% solve rate 53% fail rate
Trains going north and south come every 10 minutes each. You always arrive at random times. You end up going north 9 out of 10 times. How?
Only 47% solve this correctly
16,437 attempts
Earn +15 XP for solving
Quick Answer & Explanation
The northbound train comes

The answer to this riddle is The northbound train comes. Difficulty: Hard · Solved by 16,437 puzzle lovers.

The northbound train comes 1 minute after the southbound. So there is a 9-minute window for northbound and only 1-minute for southbound.
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