A jar contains 3 apple-flavored sweets and n n\,n orange-flavored sweets.
Two sweets are chosen at random from the jar without replacement.
The probability that both sweets chosen are apple-flavored is 115\displaystyle \frac{1}{15}151.
Work out the value of nnn.
Practise OCR GCSE Maths Probability Equation Questions with exam-style questions for Foundation and Higher tier. 28 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.