Did you know a question mark means something in math? 😱

Somehow I managed a degree in mathematics without ever encountering that. I always just either wrote it out (for small numbers) or used sigma notation.

x? = x*(x+1)/2

I have never seen this notation before. Is it used in every country ?

nC2

Thanks for the new info - always cool to learn a new math fact.

Never heard of this. It must be new.

This notation is not used anywhere. This guy only uses it because the Prof that coined the term in his book was a CA professor Donald Knuth...Howie is also using it to farm engagement since most people would have never heard of this notation even people who study computer science which was Donald's field of expertise.

n? also returns the number of matches in a single round-robin tournament or group with n teams.

Cool

I did not know that! How did I miss that?

"Please let it be a division" "We add them" "FUUUUUCK"