# math

How many arrangements can be made using 4 letters of the word HYPERBOLAS if no letter is to be used more than once?

1. 0
2. 0
3. 117
1. permutations of four of 10
n!/(n-r)!
10!/6!
10*9*8*7
5040

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2. 0
posted by Damon
2. 80

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2. 0
posted by Churro

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