This is actually a travel problem masquerading as a clock puzzle from Futility Closet.
“A problem by Argentinian puzzlist Jaime Poniachik, from the February 1992 issue of Games magazine:
An ant crawls onto a clock face at the 6 mark just as the minute hand is passing 12. She begins crawling counterclockwise around the face’s circumference at a uniform speed. When the minute hand passes her, she reverses course and crawls clockwise without changing her speed. Forty-five minutes after her first encounter with the minute hand, it passes her a second time and she departs. How much time did she spend on the clock face?”
See Clockwise Ant Puzzle for solutions.
This is a puzzle from Boris Kordemsky’s 1972 Moscow Puzzles.
This is a bit of a challenging problem from the 2026 Math Calendar.
This is a fairly challenging 
I debated posting this, but it is so rare that a human behavior would be such a perfect example of a mathematical principle that I couldn’t resist. The idea came from a great 
This is a straight-forward 
This is a problem from the 2001 American Invitational Mathematics Exam (AIME).
This is a 
This is a simple 
