Practice Complementary Events (8.5) - Probability - CBSE 9 AI (Artificial Intelligence)

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9 questions

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3 cards from this section. Quick, good the night before a test.
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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the probability of not winning a game if the winning probability is 0.4?
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Use the formula P(A') = 1 - P(A)
Question 2.
If the probability of getting heads on a coin flip is 0.5, what is the probability of not getting heads?
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What do you subtract from 1?
3Question 3.
What is the formula to find the probability of the complement of an event?
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Think about how total probabilities relate to one another.
4Question 4.
If the probability of an event is 0.2, what is the probability of its complement?
- 0.2
- 0.5
- 0.8
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Remember, probability adds to 1.
Question 5.
A six-sided die is rolled. What is the probability of not rolling a number greater than 4?
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Identify how many numbers are greater than 4.
Question 6.
You have a bag with 3 blue, 2 red, and 5 green marbles. What is the probability of not drawing a blue marble?
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Find the total marbles and identify how many are not blue.

5 more questions in this section. Enroll free to practise them all.