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QuestionMathematics

A bag contains 3 red balls, 5 blue balls, and 2 green balls. What is the probability of drawing a blue ball?
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Answer

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Step 1:
: Define the problem

The problem asks for the probability of drawing a blue ball from a bag containing 3 red balls, 5 blue balls, and 2 green balls.

Step 2:
: Determine the sample space

The sample space consists of the total number of balls in the bag, which is 3 (red) + 5 (blue) + 2 (green) = 10 balls.

Step 3:
: Determine the favorable outcomes

The favorable outcomes are the number of blue balls, which is 5.

Step 4:
: Calculate the probability

Probability is defined as the ratio of the number of favorable outcomes to the size of the sample space. So the probability of drawing a blue ball is given by:

Step 5:
: Simplify the probability

The probability can be simplified by dividing both the numerator and denominator by their greatest common divisor, which is 5:

Final Answer

The probability of drawing a blue ball is 1 / 2 or 50%.