IF YOU HEAR ME JINGLE ELAINE AROUND MOVIE NIGHT JUST BEFORE CHRISTMAS SAY YOU HAD BETTER CANCEL DID YOU SLEEP AS YOU ARE HERE IN SANTA SLEIGH RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Elves Did you answer this riddle correctly?
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Lights Did you answer this riddle correctly?
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Star Did you answer this riddle correctly?
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Gingerbread Man Did you answer this riddle correctly?
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A star Did you answer this riddle correctly?
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Your teeth Did you answer this riddle correctly?
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A Christmas quacker. Did you answer this riddle correctly?
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The New York Old St. Knicks Did you answer this riddle correctly?
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1/10

For a group of n friends, there are n! (n factorial) ways to draw the names out of the hat. Since a circle does not have a beginning and end, choose one person as the beginning and end of the circle. There are now (n-1)! ways to distribute the remaining people around the circle. Thus the probability of forming a single circle is

(n-1)! / n!

Since n! = (n-1)! * n (for n > 1), this can be rewritten as

(n-1)! / (n*(n-1)!)

Factoring out the (n-1)! from the numerator and denominator leaves

1/n

as the probability. Did you answer this riddle correctly?
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Stocking Did you answer this riddle correctly?
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Jingle Smells Did you answer this riddle correctly?
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Silent Night Did you answer this riddle correctly?
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It was rated arrrgh. Did you answer this riddle correctly?
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Elfis! Did you answer this riddle correctly?
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A deck of cards Did you answer this riddle correctly?
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