A bag contains 8 pink marbles, 5 green marbles and 10 brown marbles. What is the chance of drawing a pink marble? If a pink marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a green marble? Give solutions exactly in reduced fraction form, separated by a comma.

Question

anonymous · Answer

8/23

anonymous · Answer

8/23 ; 5/23

anonymous · Answer

how did u work this out , I do not understand , so can u please show me how to work it out?!

anonymous · Answer

a) As the bag has 23 marbles of which 8 are pink, the chances to draw a pink one are 8 of 23.

b) If you draw any marble and then put it back, it doesn't change anything; the bag will remain the same as when the "experiment" started. Then if you pick another marble, the probability of it be green is 5 (the amount of green marbles) of 23 (total amount of marbles).