I need help because i’m not smart :)

Find two rational expressions that have the difference of 2-n/n-4

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error