By Babamots

8m

11 Questions

35K Plays
34,964 Plays

34,964 Plays

Comments

Give Quiz Kudos

Give Quiz Kudos

11

0

0

0/11

08:00

Quiz Playlist

Details

- Only positive factors should be considered.
- Two numbers are "coprime" with each other if their only shared factor is 1.
- A number is "prime" if it has exactly two factors: 1 and itself.
- Use the modern Roman numeral system with subtraction to avoid quadruple symbol repetition.
- The nth "triangular" number is 1+2+3+...+n.
- If a=b*c, then b and c are "factors" of a.
- A "square" number is the product of an integer with itself.

Last Updated: Sep 20, 2018

Featured

Curator Pick in Numbers

Go to the Sporcle.com Mobile Site →

## Comments