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How many unique ways are there to arrange the letters in the word PRIOR?

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asked in Statistics by (900 points)  
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1 Answer

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The word PRIOR has 5 letters and the letter R repeats twice. So the formula to calculate the answer is:

5!/2! = 5*4*3*2*1 / 2*1 = 120/2 = 60.

The answer is 60.

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