Chapter 14 · Class 10 CBSE · Free Worksheet PDF

Probability Sums for Class 10 — Free CBSE Worksheet PDF with Answers

Download a free printable probability worksheet for Class 10 CBSE with 30 practice questions covering basic probability, experimental probability, theoretical probability, and probability word problems. Includes complete answer key. CBSE-aligned for the 2025-26 syllabus.

Last updated: 5 May 2026

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30 questions (Easy + Medium + Hard) with answer key. Fresh set generated daily.

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Sample Probability Sums for Class 10 — Practice Questions

Here are 8 sample probability sums from this Class 10 CBSE worksheet. Download the full PDF for all 30 questions with answers.

Q1.Which of the following statements about the probability of an event E is always true?
A.P(E) < 0
B.P(E) > 1
C.0 ≤ P(E) ≤ 1
D.P(E) = 0.5

Difficulty: Easy

Q2.A fair six-sided die is rolled once. What is the probability of getting an even number?
A.1/6
B.1/3
C.1/2
D.2/3

Difficulty: Easy

Q3.A student calculated the probability of an event and reported it as -0.5. Which of the following statements about this calculation is true?
A.The calculation is correct if the event is impossible.
B.The calculation is incorrect because probability cannot be negative.
C.The calculation is correct if the event is very unlikely.
D.The calculation is incorrect because probability must be an integer.

Difficulty: Easy

Q4.Consider two events: Event A is 'getting a sum of 13 when rolling two fair dice' and Event B is 'getting a number less than 7 when rolling a single fair die'. Which of the following correctly describes these events?
A.A is a sure event, B is an impossible event.
B.A is an impossible event, B is a sure event.
C.Both A and B are impossible events.
D.Both A and B are sure events.

Difficulty: Easy

Q5.A bag contains 3 red, 5 black, and 2 white balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is NOT black?
A.1/2
B.3/10
C.1/5
D.7/10

Difficulty: Easy

Q6.Which of the following scenarios involves outcomes that are NOT equally likely?
A.Drawing a specific number from a hat containing slips numbered 1 to 10.
B.Rolling a fair six-sided die and observing the number.
C.Tossing a coin and observing heads or tails.
D.Predicting tomorrow's weather (sunny, cloudy, rainy).

Difficulty: Easy

Q7.The probability that it will rain tomorrow is 0.35. What is the probability that it will NOT rain tomorrow?
A.0.35
B.0.50
C.0.65
D.1.00

Difficulty: Easy

Q8.In a box, there are some green and 12 blue pens. The probability of picking a green pen is 1/4. How many green pens are there in the box?
A.3
B.4
C.6
D.8

Difficulty: Easy

Answer Key — Sample Questions+
Q1:0 ≤ P(E) ≤ 1
Q2:1/2
Q3:The calculation is incorrect because probability cannot be negative.
Q4:A is an impossible event, B is a sure event.
Q5:1/2
Q6:Predicting tomorrow's weather (sunny, cloudy, rainy).
Q7:0.65
Q8:4

Download the full PDF for all 30 answers with step-by-step solutions.

About This Worksheet

TopicProbability
BoardCBSE
Class10
Total Questions30 (10 Easy + 10 Medium + 10 Hard)
Answer KeyIncluded
PriceFree

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Frequently Asked Questions

Where can I download free probability sums for Class 10?+
You can download a free Probability PDF worksheet for Class 10 CBSE right here on SparkEd. The worksheet includes 30 practice questions (basic probability, experimental probability, theoretical probability, and probability word problems) at easy, medium, and hard levels with a complete answer key.
How many probability questions are in this Class 10 worksheet?+
This SparkEd worksheet for Probability Class 10 contains 30 questions — 10 easy, 10 medium, and 10 hard. The questions cover basic probability, experimental probability, theoretical probability, and probability word problems. A fresh set is generated daily so students never repeat the same sheet.
Does the Probability worksheet for Class 10 include answers?+
Yes! Every SparkEd worksheet comes with a complete answer key. Students can self-check their work after completing the sheet. The PDF is free to download and print.
Is this probability worksheet aligned to CBSE syllabus?+
Yes. This worksheet is specifically designed for Class 10 CBSE students and aligned to the 2025-26 CBSE syllabus. All questions follow the CBSE exam pattern and difficulty level.
Can I print this Probability worksheet?+
Absolutely! The worksheet downloads as an A4-size PDF that is ready to print. It includes the questions, space for working, and a separate answer key — perfect for classroom use or home practice.
How is this worksheet different from NCERT textbook exercises?+
SparkEd worksheets go beyond NCERT exercises by providing 30 questions at 3 progressive difficulty levels. Level 1 (Easy) builds confidence, Level 2 (Medium) tests application, and Level 3 (Hard) prepares for exams. Each worksheet includes word problems and conceptual questions, not just computation.
Does this worksheet include probability word problems?+
Yes! The worksheet includes both computation-based questions and real-world word problems. Word problems are especially important for CBSE exams, and our worksheet covers a variety of scenarios to build problem-solving skills.

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SparkEd Maths provides free printable maths worksheets for Class 1-10 across CBSE, ICSE, IB, Olympiad, UP Board, Maharashtra SSC, and TN Board. Every worksheet includes an answer key and is aligned to the 2025-26 syllabus.