Pablo has 210 song on his music player thirty of those songs are salsa. the rest are rap. ge puts the player on rsndom shuffle. ehat is the probability that the first song he hears is salsa

Let's look at how many salsa songs he has out of the total amount of songs.  The problem tells us that he has 30 salsa songs out of 210.  So, we can divide 30 by 210 to get our answer.  This is equal to 1/7.  This means that there is a 1/7 chance of choosing a salsa song first.