- ℵ0 ... 12
- 12 Angry Men ... 1830, Charter of
- 1830, Revolutions of ... 1993 Superstorm
- 1996 presidential election ... 2014 Ebola outbreak in West Africa
- 2014 MU69 ... 3 Women
- 3,4,5-trihydroxybenzoic acid ... 442nd Regimental Combat Team
- 45 ... 7 July attacks
- 7 steps to pay off student loans faster ... 9to5, National Association of Working Women