Math Club was cancelled at the last minute last meeting (Becca got the flu), so we spent the meeting for 4/17 using last meeting's agenda.
We played a card game that Diana brought from Brazil called Water Cup, which was pretty fun. The attendees were:
Rebecca
Kye
Diedrik
JR
Jonathan
Professor Tong
Diana
Chris
Vegan cupcakes were made to celebrate Jonathan's birthday.
The problem of the week was brought in by Kye and Diedrik- it was a puzzle from one of their Math Competitions:
Albert and Bernard have just met Cheryl. They want to know when her birthday is.
Cheryl gives them 10 possible dates (see below).
She then tells Albert which month her birthday is in without telling him the day, and tells Bernard which day it is without telling him the month.
Albert says: I don't know when Cheryl's birthday is, but I know that Bernard also does not know.
Bernard says: First, I did not know Cheryl's birthday, but now I know!
Albert says: I too now know her birthday.
When is Cheryl's birthday?
(Here are the 10 possible dates):
May:
May 15
May 16
May 19
June:
June 17
June 18
July:
July 14
July 16
August:
Aug 14
Aug 15
Aug 17
(End of problem).
After giving everyone a chance to work on the problem by themselves, we discussed the solution. The answer is July 16, and it is found through eliminating duplicates using logic based on what the characters Albert and Bernard say.
Next, we voted to have a meeting on May 1st. So, the next 2 meetings are:
Friday, May 1st, 2015
Friday, May 15th, 2015
As usual, the meetings are from 11:30 to 12:30 in room 9-253.
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