a bag contains 2 red marble 9 blue marble 18 green marble 10 purple marble and 7 yellow marble. if you pull out one marble firsthe replace it inside the bag and pul out second one ,what is the probability of pulling out a blue marble in the second case?
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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
Step-by-step explanation:
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