The question is incomplete! Complete question along with answer and explanation is provided below.
Question:
You randomly draw a marble from a bag of marbles that contains 3 blue marbles, 4 green marbles, and 5 red marbles. What is P?
a) selecting a blue marble
b) selecting a green marble
c) selecting a red marble
Answer:
a) P(blue marble) = 1/4
b) P(green marble) = 1/3
c) P(red marble) = 5/12
Step-by-step explanation:
a) The probability of selecting a blue marble is given by,
P(blue marble) = no. of blue marbles/total no. of marbles
Where number of blue marbles = 3
Total number of marbles = 3 + 4 + 5 = 12
P(blue marble) = 3/12
P(blue marble) = 1/4
b) The probability of selecting a green marble is given by,
P(green marble) = no. of green marbles/total no. of marbles
Number of green marbles = 4
Total number of marbles = 12
P(green marble) = 4/12
P(green marble) = 1/3
c) The probability of selecting a red marble is given by,
P(red marble) = no. of red marbles/total no. of marbles
Where number of red marbles = 5
Total number of marbles = 12
P(red marble) = 5/12
So, the probabilities are
P(blue marble) = 1/4
P(green marble) = 1/3
P(red marble) = 5/12
