two marbles are drawn without replacement from a box with 3 white,2 green, 2 red, and 1 blue marble. Find the probability. 

Both are white marbles. 

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

(3/8) * (3-1)/(8-1) = ?

To find the probability of drawing two white marbles from the box, we need to determine the total number of possible outcomes and the number of favorable outcomes.

First, let's calculate the total number of marbles in the box:
Total marbles = 3 white + 2 green + 2 red + 1 blue = 8 marbles

Next, consider the number of favorable outcomes, which is the number of ways to choose 2 white marbles from the 3 white marbles available in the box.

We will use the formula for combinations (nCr) to calculate the number of favorable outcomes:
Number of favorable outcomes = 3C2 = 3 (Since we are choosing 2 marbles from 3)

Now, we can calculate the probability by dividing the number of favorable outcomes by the total number of possible outcomes:

Probability = Number of favorable outcomes / Total number of possible outcomes

Probability = 3 / 8 = 3/8

Therefore, the probability of drawing two white marbles without replacement from the box is 3/8.