Ask Question
29 November, 09:07

A bag contains Five blue marbles, 6 red ones and 9 green ones. Two marbles are drawn at random, one at a time, without replacing. What is the probability of selecting two blue marbles?

a 9/20

b 3/38

c 1/19

d 11/20

+3
Answers (1)
  1. 29 November, 09:34
    0
    There are 20 marbles all together in the bag.

    5 of them are blue.

    The probability of pulling a blue one on the first draw is

    5 / 20.

    After that, there are 19 marbles left in the bag, and 4 of them are blue.

    The probability of pulling a blue marble on the second draw is

    4 / 19.

    The probability of both draws being blue is

    (5/20) x (4/19)

    = 1 / 19 = 5.26 ... % (rounded)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A bag contains Five blue marbles, 6 red ones and 9 green ones. Two marbles are drawn at random, one at a time, without replacing. What is ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers