Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl
  • Member for 8 years, 9 months
  • Last seen more than a month ago
10 votes
2 answers
979 views

Bouncing ball on a billiard board

11 votes
2 answers
440 views

A curious circuit

12 votes
1 answer
404 views

Fitting the pieces

9 votes
3 answers
414 views

A problem of inequalities