Suppose you choose a marble from a bag containing 6 red marbles, 2 white marbles and 5 blue marbles you return the first marble to the bag and then you choose again find P (red and blue)

30/169

Step-by-step explanation:

We need to know how many marbles in the bag

6 red marbles + 2 white marbles + 5 blue marbles = 13 marbles

P (red) = red / total = 6/13

We then put the marble bad so there are still 13 marbles in the bag

P (blue) = blue / total = 5/13

P (red then blue) = P (red) * P (blue)

= 6/13 * 5/13 = 30/169