Question 999359
 Ariel, Ollie and Eden are going trick or treating for Halloween, but first their parents are taking them to a costume store to pick out costumes. The store has 9 different costume options available-witch, pirate, cat, superhero, princess, vampire, firefighter, zombie and clown. How many different ways can Ariel, Ollie and Eden each select one of these costumes, with no two of them wearing the same costume? 
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Ans: 9*8*7 = 504 ways
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Cheers,
Stan H.
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