Brain teaser

How smart are you?

SUM-Day Soon

Some people believe that January 1, 2000, is the first day of the 21st century. Other people believe that the honour belongs to January 1, 2001. But everyone should agree that January 1, 2002, is the first "sum-day" of the new century. When you write out that date in standard notation, it becomes 01/01/02 and 1+1=2. More generally, a sum-day is a date in which the day and month add up to the year. With that in mind:

A) What is the last sum-day of the 21st century?

B) How many sum-days are there in the 21st century?

(http://www.braingle.com)

Email answers to editorial@gleanerjm.com

Last week's answer to Grandmas and Trolls:

At each bridge, you are required to give half of your cakes and you receive one back, which leaves you with two cakes after every bridge.