2) A jar contains 5 red marbles, 5 green marbles, and 10 blue marbles. What is the probability of randomly selecting a red marble from the jar? Explain

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**Question 2: Probability of Selecting a Red Marble**

A jar contains the following marbles:
- 5 red marbles
- 5 green marbles
- 10 blue marbles

**Problem:** What is the probability of randomly selecting a red marble from the jar? Explain.

**Solution Explanation:**

To determine the probability of selecting a red marble, we follow these steps:

1. **Total Number of Marbles:** Calculate the total number of marbles in the jar by adding the numbers of each color:
   \[
   5 \text{ (red)} + 5 \text{ (green)} + 10 \text{ (blue)} = 20 \text{ marbles}
   \]

2. **Favorable Outcomes:** The number of favorable outcomes (selecting a red marble) is 5.

3. **Probability Formula:** Use the probability formula:
   \[
   \text{Probability} = \frac{\text{Number of Favorable Outcomes}}{\text{Total Number of Outcomes}}
   \]

4. **Calculate Probability:**
   \[
   \text{Probability of selecting a red marble} = \frac{5}{20} = \frac{1}{4} = 0.25
   \]

Thus, the probability of randomly selecting a red marble from the jar is 0.25, or 25%.
Transcribed Image Text:**Question 2: Probability of Selecting a Red Marble** A jar contains the following marbles: - 5 red marbles - 5 green marbles - 10 blue marbles **Problem:** What is the probability of randomly selecting a red marble from the jar? Explain. **Solution Explanation:** To determine the probability of selecting a red marble, we follow these steps: 1. **Total Number of Marbles:** Calculate the total number of marbles in the jar by adding the numbers of each color: \[ 5 \text{ (red)} + 5 \text{ (green)} + 10 \text{ (blue)} = 20 \text{ marbles} \] 2. **Favorable Outcomes:** The number of favorable outcomes (selecting a red marble) is 5. 3. **Probability Formula:** Use the probability formula: \[ \text{Probability} = \frac{\text{Number of Favorable Outcomes}}{\text{Total Number of Outcomes}} \] 4. **Calculate Probability:** \[ \text{Probability of selecting a red marble} = \frac{5}{20} = \frac{1}{4} = 0.25 \] Thus, the probability of randomly selecting a red marble from the jar is 0.25, or 25%.
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