Secrets of Mental Math
Season 1
Ep 10. Calendar Calculating
- TV-PG
- January 16, 2011
- 34 min
The fun continues in this lecture with determining the day of the week of any date in the past or in the future. What day of the week was July 4, 2000? How about February 12, 1809? You'd be surprised at how easy it is for you to grasp the simple mathematics behind this handy skill.
