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Probability

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Q. A box contains 4 white and 6 black balls. What is the probability of drawing a black ball? (2023)
  • A. 2/5
  • B. 3/5
  • C. 4/5
  • D. 1/5
Q. A box contains 4 white and 6 black balls. What is the probability of picking a black ball?
  • A. 2/5
  • B. 3/5
  • C. 4/5
  • D. 1/5
Q. A box contains 5 white and 3 black balls. What is the probability of drawing a black ball?
  • A. 3/8
  • B. 5/8
  • C. 1/2
  • D. 1/3
Q. A box contains 5 white and 3 black balls. What is the probability of picking a black ball? (2021)
  • A. 3/8
  • B. 5/8
  • C. 1/2
  • D. 1/3
Q. A card is drawn from a standard deck of 52 cards. What is the probability of drawing a heart?
  • A. 1/4
  • B. 1/13
  • C. 1/2
  • D. 1/52
Q. A jar contains 10 candies, 4 of which are chocolate. What is the probability of selecting a chocolate candy?
  • A. 2/5
  • B. 1/2
  • C. 4/10
  • D. 3/10
Q. A jar contains 4 green, 5 yellow, and 1 red marble. What is the probability of picking a yellow marble? (2019)
  • A. 1/10
  • B. 1/5
  • C. 1/2
  • D. 5/10
Q. A jar contains 6 green and 4 yellow marbles. What is the probability of picking a yellow marble?
  • A. 2/5
  • B. 1/2
  • C. 4/10
  • D. 3/5
Q. A jar contains 7 red, 5 blue, and 8 green marbles. What is the probability of selecting a blue marble?
  • A. 5/20
  • B. 1/4
  • C. 1/5
  • D. 1/3
Q. A jar contains 8 red and 4 blue marbles. What is the probability of selecting a blue marble?
  • A. 1/3
  • B. 1/2
  • C. 1/4
  • D. 1/5
Q. A jar contains 8 red, 6 blue, and 4 green marbles. What is the probability of selecting a blue marble?
  • A. 1/3
  • B. 1/4
  • C. 2/5
  • D. 3/10
Q. A student has a 70% chance of passing an exam. What is the probability of failing the exam?
  • A. 0.3
  • B. 0.7
  • C. 0.5
  • D. 0.2
Q. If a bag contains 4 green and 6 yellow marbles, what is the probability of picking a green marble?
  • A. 2/5
  • B. 4/10
  • C. 4/6
  • D. 1/3
Q. If a bag contains 4 green and 6 yellow marbles, what is the probability of picking a yellow marble?
  • A. 2/5
  • B. 3/5
  • C. 4/5
  • D. 1/5
Q. If a coin is tossed twice, what is the probability of getting at least one head?
  • A. 1/4
  • B. 1/2
  • C. 3/4
  • D. 1
Q. If a die is rolled, what is the probability of getting an even number? (2022)
  • A. 1/2
  • B. 1/3
  • C. 1/6
  • D. 2/3
Q. If a student guesses on a multiple-choice test with 4 options per question, what is the probability of guessing one question correctly? (2023)
  • A. 1/4
  • B. 1/2
  • C. 1/3
  • D. 1/5
Q. If a student guesses on a multiple-choice test with 4 options per question, what is the probability of guessing correctly?
  • A. 1/4
  • B. 1/2
  • C. 1/3
  • D. 1/5
Q. If a student guesses on a multiple-choice test with 4 options, what is the probability of guessing correctly? (2022)
  • A. 1/4
  • B. 1/2
  • C. 1/3
  • D. 1/5
Q. If a student is selected at random from a group of 10 boys and 15 girls, what is the probability that the student is a girl? (2023)
  • A. 1/2
  • B. 3/5
  • C. 2/5
  • D. 1/3
Q. If a student is selected at random from a group of 20 students, 12 of whom are girls, what is the probability that the student is a girl?
  • A. 3/5
  • B. 2/5
  • C. 1/2
  • D. 1/3
Q. If a student is selected at random from a group of 20 students, what is the probability that the student is not a girl if there are 12 girls? (2020)
  • A. 2/5
  • B. 1/5
  • C. 3/5
  • D. 1/2
Q. If a student is selected at random from a group of 40 students, 25 of whom are boys, what is the probability that the student is a girl? (2020)
  • A. 1/2
  • B. 3/8
  • C. 3/5
  • D. 5/8
Q. If two coins are tossed, what is the probability of getting at least one tail? (2023)
  • A. 1/4
  • B. 1/2
  • C. 3/4
  • D. 1/3
Q. If two dice are rolled, what is the probability that the sum is 7?
  • A. 1/6
  • B. 1/12
  • C. 1/36
  • D. 5/36
Q. In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy? (2021)
  • A. 3/5
  • B. 2/5
  • C. 1/2
  • D. 1/3
Q. In a game, the probability of winning is 0.2. What is the probability of losing? (2019)
  • A. 0.2
  • B. 0.5
  • C. 0.8
  • D. 0.3
Q. In a group of 50 people, 20 are smokers. What is the probability of selecting a non-smoker? (2022)
  • A. 2/5
  • B. 3/5
  • C. 1/2
  • D. 1/4
Q. In a group of 50 people, 20 are smokers. What is the probability that a randomly selected person is a non-smoker? (2021)
  • A. 1/2
  • B. 3/5
  • C. 2/5
  • D. 1/5
Q. In a lottery, there are 10 tickets, and 2 are winning tickets. What is the probability of picking a winning ticket?
  • A. 1/5
  • B. 1/10
  • C. 1/2
  • D. 2/10
Showing 1 to 30 of 36 (2 Pages)

Probability MCQ & Objective Questions

Understanding probability is crucial for students preparing for school and competitive exams. It helps in making informed predictions and decisions based on data. Practicing MCQs and objective questions in probability not only enhances conceptual clarity but also boosts your confidence, ensuring better scores in exams. By tackling a variety of practice questions, you can familiarize yourself with important questions that often appear in assessments.

What You Will Practise Here

  • Basic concepts of probability and its significance
  • Types of probability: theoretical, experimental, and subjective
  • Key formulas for calculating probabilities
  • Understanding events: independent, dependent, and mutually exclusive
  • Applications of probability in real-life scenarios
  • Probability distributions and their properties
  • Solving problems using Venn diagrams and tree diagrams

Exam Relevance

Probability is a significant topic in various examinations, including CBSE, State Boards, NEET, and JEE. Students can expect questions that test their understanding of basic concepts, calculations, and applications of probability. Common question patterns include multiple-choice questions that require the application of formulas, as well as scenario-based questions where students must analyze given data to determine probabilities.

Common Mistakes Students Make

  • Confusing independent and dependent events
  • Misapplying probability formulas in different contexts
  • Overlooking the importance of sample space in calculations
  • Failing to interpret word problems correctly
  • Neglecting to check for mutually exclusive events

FAQs

Question: What are the basic rules of probability?
Answer: The basic rules include the addition rule, multiplication rule, and the concept of complementary events.

Question: How can I improve my probability skills for exams?
Answer: Regular practice of probability MCQ questions and understanding the underlying concepts will significantly enhance your skills.

Question: Are there any specific strategies for solving probability problems?
Answer: Break down complex problems into simpler parts, use diagrams where necessary, and always verify your answers.

Now is the time to boost your preparation! Dive into our practice MCQs on probability and test your understanding. Every question you solve brings you one step closer to mastering this essential topic for your exams.

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