Find the probability of drawing a blue marble a red marble and a blue marble again with 16 marbles total and 8 blue marbles and 2 red marbles

Let's start off with the probability to draw a blue marble which is basically the number of blue marbles/ total number of marbles = 8/16=1/2= 50%, now the red marble, since we already drawn a marble the total number of marbles decreases by 1 so the probability of drawing a red marble is 2/15, now we take 1 out again so the total is 14 so the probability of drawing a blue marble again is 7/14*1/2=1/4= 25% hope this helps!

Igotchu on that if you still need it

Using the rise/run rule. you would get 2/6.simp. 1/3