There are 25 balls in a bag, made up of two different colours,
There are 12 black balls
You remove 1 ball from the bag
What is the probablility of taking a blue ball? Give you answer as a fraction in simplest
form
Since there are 25 balls and 12 black balls, you want to subtract 12 from 25 to get the number of blue balls. There are 25 balls in total, so the probability of getting a blue ball is 13/25
