Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total number of pictures.
Solution Stats
Problem Comments
-
1 Comment
Pritesh Shah
on 2 Aug 2014
Good One:))
Solution Comments
-
1 Comment
Vishal
on 30 Sep 2014
Combination.......good one!
Problem Recent Solvers362
Suggested Problems
-
3163 Solvers
-
Project Euler: Problem 6, Natural numbers, squares and sums.
1106 Solvers
-
233 Solvers
-
436 Solvers
-
368 Solvers
More from this Author100
Problem Tags
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)