Question

Sue has 20 biscuits in a tin.

There are: 12 plain biscuits
5 chocolate biscuits
3 currant biscuits
Sue takes at random two biscuits from the tin.
Work out the probability that the two biscuits were not the same type

Answer 1

25

Explanation:

25 because when you add 12 and 5 then subract the numerator you get 25