Traits of 13[]
- "Unlucky" Number
- Odd
- Prime
- Happy Number
Examples of 13[]
- 13 Stripes on U.S. flag
- Triskaidekaphobia
- 13th Amendment abolished slavery
- U.S. Dollar:
- 13 bars on shield
- 13 leaves on olive branch
- 13 arrows
- 13 stars
- 13 steps on pyramid
- 13 letters ANNUIT COEPTIS
- 13 letters E PLURIBUS UNUM