When is this a perfect square?
12:48
2 viewer suggested recursive sequences.
16:44
The smallest such prime...
8:12
When is this a perfect square?
11:35
When is this □? Plus the first weekly update.
18:46
A questionable factorial problem
15:52
How Many Rooks to BEAT Martin?
22:03
Indian Mathematical Olympiad | 1992 Question 8
20:14