Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year.
And not only is it a permutation day, it’s a palindrome day! Thinking of the date as 9/12/19, we can write 91219, which is a palindrome–a number that reads the same backward and forward. Enjoy the day by rearranging something or doing something backwards! Or perhaps even both.
A beautiful sculpture and a beautiful blue sky in front of San Francisco’s Exploratorium. I wonder if the same artist was responsible for the temporary exhibit in Madison Square Park a few years ago?
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Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year.
We can also consider today a Transposition Day, as we need only a single transposition (an exchange of two numbers) to turn the year into the day and date.
Celebrate Permutation Day by mixing things up! Try doing things in a different order today. Just remember, for some operations, order definitely matters!
Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year.
Celebrate Permutation Day by mixing things up! Try doing things in a different order today. Just remember, for some operations, order definitely matters.
Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year.
Celebrate Permutation Day by mixing things up! Try doing things in a different order today. Just remember, for some operations, order definitely matters!