The sum of the non-primes no larger than 10 is 1+4+6+8+9+10=38
Find the sum of all the positive non-prime integers that do not exceed the input, N.
Solution Stats
Problem Comments
-
2 Comments
Vincent
on 13 Dec 2012
The description of the problem is slightly misleading. It says the sum "below" 10, yet the sum includes 10. It should be ammended to "Find the sum of all the non-primes below the input, and including the input, N.", or something to that effect.
John D'Errico
on 22 Feb 2018
I've now fixed the problem statement to be consistent.
Problem Recent Solvers263
Suggested Problems
-
Return elements unique to either input
479 Solvers
-
Magic is simple (for beginners)
1206 Solvers
-
Switch matrix to a column vector
191 Solvers
-
Back to basics - mean of corner elements of a matrix
239 Solvers
-
269 Solvers
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)