Calculating Probability of Disjoint Events: The Addition Rule

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Mathematics
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1st - 6th Grade
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Medium
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean for two events to be disjoint?
They cannot occur at the same time.
They can occur at the same time.
They are always independent.
They are always dependent.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which rule is used to calculate the probability of disjoint events?
Division rule
Addition rule
Subtraction rule
Multiplication rule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the probability of rolling a 3 or 5 on a six-sided die?
1/4
1/2
1/3
1/6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the probability of rolling a 3 on a six-sided die?
1/4
1/2
1/3
1/6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't we simply add the probabilities of drawing a Jack or a red card from a deck?
Because the probabilities are equal.
Because the deck is incomplete.
Because they are not disjoint events.
Because they are disjoint events.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the duck problem, what is the probability of drawing a red or yellow duck?
5/12
1/4
1/3
1/2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of non-disjoint events?
Having green or blue eyes
Rolling a 3 or 5 on a die
Drawing a Jack or a red card
Flipping heads or tails on a coin
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