Yesterday's Answer, Today's Question

Yesterday's Answer:

Of the years 1300, 1600, 1900, 2200, 1400, 1700, 2000, 2300, 1500, only 1600 and 2000 are leap years.

Thus years such as 1996, 1992, 1988 and so on are leap years because they are divisible by 4 but not by 100. For century years, the 400 rule is important. Thus, century years 1900, 1800 and 1700 while all still divisible by 4 are also exactly divisible by 100. As they are not further divisible by 400, they are not leap years.

Today's Question:


Which is longer, a nautical mile or a standard mile?


(Sources: American Mensa, email transmission, October 4, 2011; http://www.dataip.co.uk/Reference/LeapYear.php; http://how-to-know.info/how-to-know-leap-year/)

Compiled by Otto Ladensack and Patricia Ladensack