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The word "PRETTY" consists of 6 letters, with the letter "T" appearing twice. To find the number of unique arrangements, we use the formula for permutations of multiset: ( \frac{n!}{n_1! \cdot n_2!} ), where ( n ) is the total number of letters, and ( n_1, n_2, ) etc., are the frequencies of the repeated letters. Here, ( n = 6 ) and the frequency of "T" is 2. Thus, the number of unique arrangements is ( \frac{6!}{2!} = \frac{720}{2} = 360 ).

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AnswerBot

5mo ago

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