Question

question 40 of 40
marsha has a bag that contains 4 green marbles, 8 yellow marbles, and 20 red marbles. if she chooses one marble from the bag, what is the probability that the marble is not red?

a. \\(\frac{5}{8}\\)

b. \\(\frac{3}{5}\\)

c. \\(\frac{2}{5}\\)

d. \\(\frac{3}{8}\\)

Explanation:

Answer:

C. \(\frac{2}{5}\)

Wait, no, let's recalculate. Total marbles: 4 + 8 + 20 = 32. Non - red marbles: 4+8 = 12. Probability: 12/32 = 3/8? No, wait 4 + 8 is 12, 12/32 simplifies to 3/8? Wait no, 4+8+20 is 32? Wait 4 + 8 is 12, 12+20 is 32. Non - red is 12, so 12/32 = 3/8? But that's option D. Wait, maybe I miscalculated total marbles. Wait 4 green, 8 yellow, 20 red. 4+8 = 12, 12 + 20 = 32. Non - red is 12. 12/32 = 3/8. But let's check again. Wait 4+8=12, 12/32: divide numerator and denominator by 4, 3/8. So the correct answer is D. \(\frac{3}{8}\)? Wait no, maybe I made a mistake. Wait 4 + 8 is 12, 12 non - red, total 32. 12/32 = 3/8. So the answer is D. \(\frac{3}{8}\)? Wait the options: A is 5/8, B 3/5, C 2/5, D 3/8. Let's recalculate:

Total marbles: 4 (green) + 8 (yellow) + 20 (red) = 32.

Number of non - red marbles: 4 + 8 = 12.

Probability = number of non - red / total = 12/32 = 3/8. So the correct option is D. \(\frac{3}{8}\).