A student has a bag of marbles. There are 5 pink, 7 red, 12 green, 2 blue, and 4 black marbles in the bag. Calculate the theoretical probability of picking a green marble.(1 point)
Responses
1
1
720
Start Fraction 7 over 20 End Fraction
35
Start Fraction 3 over 5 End Fraction
2/5
The theoretical probability of picking a green marble would be 12 (number of green marbles) divided by the total number of marbles in the bag, which is 30 (sum of all marbles).
So, the theoretical probability of picking a green marble would be 12/30 = 2/5 = 0.4
Therefore, the correct answer is 2/5.