We encourage you to share problems from Brilliant with your friends, and have built a "Share this problem" feature for this purpose.
Please do not request answers to problems from Brilliant on other sites. This could effectively make the answer public and spoil the challenge for the problem solving community on Brilliant.
If you see a Brilliant problem posted on an external site, please email support@brilliant.org to report it.
Still have questions? Reach us at support@brilliant.org.