A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. If a ball is drawn from the bag, without looking into it, find the probability that the ball drawn is:
red

Answer

To find the probability of drawing a red ball from the bag, we can follow these steps:

### Step 1: Identify the total number of balls in the bag.
The bag contains:
- 1 red ball
- 1 blue ball
- 1 yellow ball

**Total number of balls = 1 (red) + 1 (blue) + 1 (yellow) = 3 balls.**

### Step 2: Identify the number of favorable outcomes.
We are interested in the event of drawing a red ball. There is:
- 1 red ball in the bag.

**Number of favorable outcomes (red balls) = 1.**

### Step 3: Use the probability formula.
The probability \( P \) of an event is given by the formula:

\[ P(\text{Event}) = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \]

In this case, the event is drawing a red ball.

### Step 4: Substitute the values into the formula.
Substituting the values we found:

\[ P(\text{Red ball}) = \frac{\text{Number of red balls}}{\text{Total number of balls}} = \frac{1}{3} \]

### Final Answer:
The probability that the ball drawn is red is \( \frac{1}{3} \).

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