2 Coins

All Submissions
Best Submissions

Difficulty: 6

This problem is tagged with miscellaneous, coolmath.

Two coins of different sizes are placed such that the smaller one is on top of the larger one. The smaller coin's radius is $\frac{1}{2}$ of the larger one. After how many revolutions will the smaller coin return to its starting position?

Please login or sign up to submit and check if your answer is correct.

flag Report Content
You should report content if:
  • It may be offensive.
  • There is something wrong with it (statement or difficulty value)
  • It isn't original.
Thanks for keeping the Math Contest Repository a clean and safe environment!