A box contains 3 red balls and 5 blue balls. If one ball is drawn at random, wha

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Question: A box contains 3 red balls and 5 blue balls. If one ball is drawn at random, what is the probability that it is red? (2019)

Options:

Correct Answer: 3/8

Exam Year: 2019

Solution:

Total balls = 3 + 5 = 8. Probability of red = 3/8.

A box contains 3 red balls and 5 blue balls. If one ball is drawn at random, what is the probability that it is red? (2019)

A box contains 3 red balls and 5 blue balls. If one ball is drawn at random, what is the probability that it is red? (2019)

Step 1: Count the number of red balls in the box. There are 3 red balls.
Step 2: Count the number of blue balls in the box. There are 5 blue balls.
Step 3: Add the number of red balls and blue balls together to find the total number of balls. 3 red + 5 blue = 8 total balls.
Step 4: To find the probability of drawing a red ball, divide the number of red balls by the total number of balls. This is 3 red balls divided by 8 total balls.
Step 5: Write the probability as a fraction: Probability of red = 3/8.

Probability Calculation – Understanding how to calculate the probability of an event by dividing the number of favorable outcomes by the total number of possible outcomes.