A music app has a shuffle play function. This means that songs are played in a random order without repeat.
a) Sue puts 10 songs on shuffle play.
One of them is her favourite song.
Write down the probability, as a fraction,
that her favourite song plays first.
Write the fraction in its simplest form.
(1)
b) Ted puts songs A, B and C on shuffle play.
(1) How many possible orders of songs can there be?
(ii) List all the possible orders of songs A, B and C.
One has been done for you. ABC