Answer:
The probability that both marbles she chooses are blue is 2/15
Step-by-step explanation:
To find : What is the probability that both marbles she chooses are blue?
Solution :
Total number of marbles = 10
Green marbles = 4
Red marbles = 2
Blue marbles = 4
Probability is favorable outcome upon total number of outcomes.
Probability of getting first marble is blue
4/10=2/5
Without replacement,
i.e. Blue marble left = 3
Total marble left = 9
Probability of getting second marble is blue
3/9=1/3
The probability that both marbles she chooses are blue is
2/5*1/3
= 2/15
Therefore, The probability that both marbles she chooses are blue is 2/15
