There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the
first marble chosen. What is the probability of Jamie's picking 2 white marbles?
A) 1/15
B) 1/18
C) 1/20
D) 1/7
2 answers:
Answer:
A) 1/15
Step-by-step explanation:
The probability of picking a white marble is 3/10. Then 2 of the remaining 9 marbles are white, so the probability of picking one is 2/9.
The joint probability is (3/10)·(2/9) = 6/90 = 1/15
Answer:
1/7 is the probability hope this helps
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