Question

a bag contains 2 red marbles 9 blue marbles,18 green marbles 10 Purple marbles and 7 yellow marbles if you pull out one Marvel first replace it inside the bag and pull out a second one. what is the probability of pulling out blue marble in the second case ?​

Answer 1

Step-by-step explanation:

Total number of marbles=2+9+18+10+7=46

The probability of pulling out a red marble in the 1st case= 2/46=1/23

Now that one marble has been pulled out, total number of marbles=45

Then probability of pulling out a purple marble in the 2nd case= 10/45=2/9

So the probability of pulling out a red marble in the first case and not replacing it and pulling out a purple marble in the 2nd case= 1/23 * 2/9

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Answer 2

Answer:

the probability of pulling out a blue marble in the second case= 11/46