Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl's user avatar
Carl Löndahl
  • Member for 7 years, 11 months
  • Last seen this week
12 votes
1 answer
396 views

Fitting the pieces

11 votes
2 answers
429 views

A curious circuit

10 votes
2 answers
953 views

Bouncing ball on a billiard board

9 votes
3 answers
411 views

A problem of inequalities