A crate contains 6 pears and x x\,x apples.
A person takes two pieces of fruit from the crate at random.
The probability that both pieces of fruit are apples is 12\displaystyle \frac{1}{2}21.
Work out the value of xxx.
28 exam-style questions on Edexcel GCSE Maths Probability Equation Questions. Each one has a worked solution and a mark scheme showing where the marks go.