a bag contains 4 red balls  3 blue balls 5 green balls what the probability of picking a blue ball?

To calculate the probability of picking a blue ball from the bag, we first need to determine the total number of balls in the bag.

### Step 1: Total number of balls
- Red balls: 4
- Blue balls: 3
- Green balls: 5

**Total number of balls = 4 + 3 + 5 = 12**

### Step 2: Probability of picking a blue ball
The probability of an event is given by the ratio of the number of favorable outcomes to the total number of possible outcomes.

\[
P(\text{Blue}) = \frac{\text{Number of blue balls}}{\text{Total number of balls}} = \frac{3}{12} = \frac{1}{4}
\]

So, the probability of picking a blue ball is \( \frac{1}{4} \) or 0.25 (25%).

Would you like further details or have any questions?

Here are five related questions for further practice:
1. What is the probability of picking a red ball?
2. What is the probability of picking a green ball?
3. What is the probability of not picking a blue ball?
4. If one blue ball is removed, what is the new probability of picking a blue ball?
5. What is the probability of picking either a red or a green ball?

**Tip:** Remember, probability is always a value between 0 and 1, where 0 means an impossible event, and 1 means a certain event.

A bag contains 4 red balls, 3 blue balls, and 5 green balls. What is the probability of picking a blue ball?

Learn how to calculate the probability of picking a blue ball from a bag containing 4 red, 3 blue, and 5 green balls. This problem uses basic probability principles and is suitable for students in Grades 6-8. Explore a step-by-step solution and related practice questions.

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