Practice Complementary Events (7.5) - Probability - ICSE 10 Maths
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Complementary Events

Practice - Complementary Events

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

If the probability of a student passing an exam is 0.80, what is the probability of not passing?

💡 Hint: Use the formula P(not E) = 1 - P(E).

Question 2 Easy

An event has a probability of 0.25. What is the probability of the complementary event?

💡 Hint: 1 minus the given probability.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the probability of an event not occurring if the event has a probability of 0.90?

0.10
0.90
0.50

💡 Hint: Subtract from 1.

Question 2

If P(E) = 0.30, what is P(not E)?

True
False

💡 Hint: Calculate it to verify.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

In an experiment, a die is rolled. The probability of rolling a number greater than 4 is 0.33. What is the probability of rolling a number that is not greater than 4?

💡 Hint: Think about how the probabilities relate.

Challenge 2 Hard

If the chance of selecting an apple from a basket is 0.60, what is the probability that you do not select an apple? How can this be useful in real-life decisions?

💡 Hint: Apply the complementary concept here.

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