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A jar contains 3 white, 2 black, and 5 blue balls. What is the probability of pi

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Question: A jar contains 3 white, 2 black, and 5 blue balls. What is the probability of picking a blue ball?

Options:

  1. 1/2
  2. 5/10
  3. 1/5
  4. 1/4

Correct Answer: 1/2

Solution:

Total balls = 3 + 2 + 5 = 10. Probability of blue ball = 5/10 = 1/2.

A jar contains 3 white, 2 black, and 5 blue balls. What is the probability of pi

Practice Questions

Q1
A jar contains 3 white, 2 black, and 5 blue balls. What is the probability of picking a blue ball?
  1. 1/2
  2. 5/10
  3. 1/5
  4. 1/4

Questions & Step-by-Step Solutions

A jar contains 3 white, 2 black, and 5 blue balls. What is the probability of picking a blue ball?
  • Step 1: Count the number of white balls in the jar. There are 3 white balls.
  • Step 2: Count the number of black balls in the jar. There are 2 black balls.
  • Step 3: Count the number of blue balls in the jar. There are 5 blue balls.
  • Step 4: Add the total number of balls together: 3 (white) + 2 (black) + 5 (blue) = 10 total balls.
  • Step 5: Identify how many of those balls are blue. There are 5 blue balls.
  • Step 6: Calculate the probability of picking a blue ball by dividing the number of blue balls by the total number of balls: 5 (blue) / 10 (total) = 1/2.
  • 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.
  • Total Outcomes – Recognizing the importance of correctly counting the total number of items in a sample space.
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