Question

These marbles are placed in a bag and twoof them are randomly drawn.What is the probability of drawing twoyellow marbles if the first one is placed backin the bag before the second draw?Give your answer as a ratio, reduced tosimplest terms.Hint: Multiply the probability of the 1st Event by theprobability of the 2nd Event to get your answer.

Answer 1

step 1

Find the probability that the first marble is yellow

P=2/10 ------> P=1/5

step 2

Find the probability the the second marble is yellow

P=2/10 -----> P=1/5

therefore

P=(1/5)(1/5)

P=1/25

answer is 1/25