A box contains 5 white and 3 black balls. If one ball is drawn at random, what i
Practice Questions
Q1
A box contains 5 white and 3 black balls. If one ball is drawn at random, what is the probability that it is not black?
3/8
5/8
1/2
7/8
Questions & Step-by-Step Solutions
A box contains 5 white and 3 black balls. If one ball is drawn at random, what is the probability that it is not black?
Correct Answer: 5/8
Step 1: Count the total number of balls in the box. There are 5 white balls and 3 black balls.
Step 2: Add the number of white balls and black balls together. Total = 5 + 3 = 8 balls.
Step 3: Identify the number of balls that are not black. Since there are 5 white balls, the number of balls that are not black is 5.
Step 4: Calculate the probability of drawing a ball that is not black. This is done by dividing the number of non-black balls (5) by the total number of balls (8).
Step 5: Write the probability as a fraction: Probability = 5/8.
Probability – The likelihood of an event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.
Complementary Events – Events that cover all possible outcomes; in this case, drawing a ball that is not black includes drawing a white ball.
