There are a total of 19 marbles.
The chance of picking a blue marble is
Since you didn't put that marble back in, there are 18 marbles still in the bag.
The chance of picking a brown marble is <span>
Multiplying the two values together results with </span>
The chance of picking a blue marble is
Since you didn't put that marble back in, there are 18 marbles still in the bag.
The chance of picking a brown marble is <span>
Multiplying the two values together results with </span>