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A box contains 3 red balls and 2 blue balls. If one ball is drawn at random, wha
Practice Questions
Q1
A box contains 3 red balls and 2 blue balls. If one ball is drawn at random, what is the probability that it is red?
1/5
2/5
3/5
4/5
Questions & Step-by-Step Solutions
A box contains 3 red balls and 2 blue balls. If one ball is drawn at random, what is the probability that it is red?
Steps
Concepts
Step 1: Count the total number of balls in the box. There are 3 red balls and 2 blue balls.
Step 2: Add the number of red balls and blue balls together: 3 (red) + 2 (blue) = 5 (total balls).
Step 3: Identify how many of the balls are red. There are 3 red balls.
Step 4: To find the probability of drawing a red ball, use the formula: Probability = (Number of red balls) / (Total number of balls).
Step 5: Substitute the numbers into the formula: Probability = 3 (red balls) / 5 (total balls).
Step 6: The probability of drawing a red ball is 3/5.
Probability
– The likelihood of an event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.
Basic Counting
– Understanding how to count the total number of items and the specific items of interest.
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