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A DJ is preparing a playlist of 17 songs. How many different ways can the DJ arrange the first four songs on the playlist? There are \( \square \) different ways that the DJ can arrange the first four songs on the playlist. (Type a whole number.)

Ask by Rodriquez Washington. in the United States
Mar 06,2025

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There are 57,120 different ways the DJ can arrange the first four songs on the playlist.

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To find the number of different ways the DJ can arrange the first four songs from a playlist of 17 songs, we use permutations since the order matters. The formula for permutations is given by: \[ P(n, r) = \frac{n!}{(n-r)!} \] In this case, \( n = 17 \) (the total number of songs) and \( r = 4 \) (the number of songs to arrange). Thus, we calculate: \[ P(17, 4) = \frac{17!}{(17-4)!} = \frac{17!}{13!} = 17 \times 16 \times 15 \times 14 \] Now we perform the multiplication: \[ 17 \times 16 = 272 \] \[ 272 \times 15 = 4080 \] \[ 4080 \times 14 = 57120 \] So, there are \( 57120 \) different ways that the DJ can arrange the first four songs on the playlist.

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