math homework problem 30

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Of the 400 songs on an iPod, 150 are disco songs. How many songs do you need to play on a random setting to be sure you will hear a disco song?

Sep 22nd, 2014

250 are not disco songs (400 -150 = 250)

Tou could be unlucky 250 times but the next song you play must be a disco one,

Answer 251 songs must be played to guarantee a disco song.

Sep 22nd, 2014

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Sep 22nd, 2014
Oct 21st, 2017
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