A jar contains a large number of marbles. There are two colors of marbles in the jar:
A student picks a marble at random, records its color, and replaces it in the jar. They then pick a second marble at random.
Calculate the probability that both marbles picked are the same color.
Find the probability that both marbles are Red, given that at least one of the marbles is Red.
Practise Edexcel A Level Maths Conditional Probability with exam-style questions for A Level Maths. 152 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 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.
