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.

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?