Cheryl birthday math problems solutions
Cheryl birthday math problems solutions
Easy math problems solutions!
Cheryl Math Problem Explained
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Recently a thought-provoking problem was popularized: the “Cheryl's Birthday” problem.
It all started when Kenneth Kong, a television show host in Singapore, posted the following problem to Facebook:
Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is.
Cheryl gives them a list of 10 possible dates.
Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively.
Albert:“I don't know when Cheryl's birthday is, but I know that Bernard does not know too.”
Bernard:“At first I don't know when Cheryl's birthday is, but I know now.”
Albert:“Then I also know when Cheryl's birthday is.”
So when is Cheryl's birthday?
This problem quickly went viral with people from all over posting solutions and explanations