SOLUTION: Bob has a box in front of him. There are 6 red pens, 4 blue pens, and 2 green pens in the box. Bob draws a pen then puts it back before drawing again. What is the probabi

Algebra ->  Probability-and-statistics -> SOLUTION: Bob has a box in front of him. There are 6 red pens, 4 blue pens, and 2 green pens in the box. Bob draws a pen then puts it back before drawing again. What is the probabi      Log On


   



Question 874153:

Bob has a box in front of him. There are 6 red pens, 4 blue pens, and 2 green pens in the box.
Bob draws a pen then puts it back before drawing again. What is the probability that he pulls out 2 blue pens?



Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
12 pens: 6R,4B, 2G
replacement, two pulls
P(2B) = %282%2F12%29%282%2F12%29 = 1/36