Question

pre - algebra ic sem 2 fall 2025
understanding probability
determining probability
you have a bag with 4 red marbles, 3 green marbles, 2 blue marbles, and 1 purple marble.
what is the probability of drawing a red marble out of the bag?
east likely to be picked?
9/10
7/10
2/5
1/5

Explanation:

Step1: Calculate total number of marbles

Total marbles = \(4 + 3+2 + 1=10\)

Step2: Use probability formula

Probability \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). Number of red marbles (favorable outcomes) \(= 4\). So \(P=\frac{4}{10}=\frac{2}{5}\)

Answer:

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