Practice Classical (theoretical) Probability (8.3) - Probability

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10 questions

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

Question 1.
What is the probability of rolling a 3 on a die?
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Think of the total outcomes and how many are favorable.
Question 2.
If a bag contains 3 red balls and 2 blue balls, what is the probability of drawing a red ball?
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Count the total balls and favorable red balls.
3Question 3.
What is the formula for calculating classical probability?
- P(E) = Number of outcomes
- P(E) = Number of favorable outcomes / Total outcomes
- P(E) = Total outcomes - Number of favorable outcomes
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Recall the formula we discussed earlier.
4Question 4.
If the probability of an event is 0, what does this indicate?
- True
- False
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Think about the meaning of probabilities.
Question 5.
In a class of 30 students, 10 are girls. What is the probability of randomly selecting a girl?
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Think about how many girls there are compared to total students.
Question 6.
A card is drawn from a standard deck. What is the probability of drawing a heart?
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Remember the number of hearts in the deck compared to total cards.

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