Question

Suppose you pick and replace marbles from a bag, one after another. If the bag contains 3 red marbles, 3 white marbles, and 6 blue marbles, what is the probability of picking a red marble and then a blue marble?

Answer 1

1/8

Explanation:

(Btw my answer isn't copied from another website i'm using my brain. So don't accuse me of copying from other users.)

First, we have to find the total amount of marbles.

3 + 3 + 6= 12= 12 marbles total.

From 12 marbles, you want to find the probability of picking a red marble then replacing it, and picking a blue marble.

so there are 3 red marbles. so the probability of picking red is 3/12. and the probability of picking a blue marble is 6/12. Now we have to multiply these two fractions.

so 3/12 x 6/12 equals= 18/144. And if you want to simplify, it's equal to 1/8

Answer 2

25% picking out a red one & 50% picking out a blue one