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19 hours ago
It Gets My Goat - So It's Going To Grantham.
**********************************************************WHY GRANTHAM? JUST CLICK: TEXT **********************************************************
This Is My Life, Rated | |
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Take the Rate My Life Quiz |
![]() Alternating Differences (Difficulty: 3 of 5) ![]() Let X1, X2, X3, ..., Xn be a permutation of the integers 1,2,3,...,n. Consider the sum:
What is the mean value of this sum taken over all possible permutations? |
2 comments:
A quiet one for us, wasn't it? Do you think it's possible we're growing up?
I'd have loved to have been a mouse in the corner!
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