Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble, find the probability that the 1st marble is red and the second marble is green

The total number of marbles is .

If we draw a red marble, the chance of that occurring is .

Now the total number of marbles left is 7. If we then draw a green marble, the chance of that occurring is .

So the chance of drawing a red, then green, marble is .

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