Question

You randomly draw marbles from a bag containing 4 blue and 2 green marbles, replacing the marbles between draws. What is the probability of drawing a blue marble on both your first and second draws?

A) 1/4 . 1/4
B) 4/6 . 4/6
C) 1/4 . 1/3
D) 4/6 . 3/6

Answer 1

B) 4/6 · 4/6

Explanation:

We know

You randomly draw marbles from a bag containing 4 blue and 2 green marbles.

4 + 2 = 6 marbles

So, there are a total of 6 marbles in the bag

First, in the time draw, the ratio is 4/6, because there are 4 blue in a total of 6 marbles.

Replacing the marbles between draws.

So, there are still a total of 6 marbles in the second time draw.

The ratio is still 4/6 for the second time drawing.

So, the answer is B) 4/6 · 4/6