# Calculating Event Probability (Grade 7)

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## Calculating Event Probability

1.

What is the probability that the spinner will land on blue?

- [math]P(blue) = 1/2[/math]
- [math]P(blue) = 1/3[/math]
- [math]P(blue) = 1/4[/math]
- [math]P(blue) = 1/6[/math]

2.

What is the probability that the spinner will land on red or yellow?

- [math]P(R or Y) = 1/2[/math]
- [math]P(R or Y) = 1/3[/math]
- [math]P(R or Y) = 2/3[/math]
- [math]P(R or Y) = 3/4[/math]

3.

What is the probability that the spinner will land on a vowel?

- [math]P(vowel) = 2/5[/math]
- [math]P(vowel) = 3/5[/math]
- [math]P(vowel) = 4/5[/math]
- [math]P(vowel) = 5/5[/math]

4.

What is the probability that the spinner will land on 1 or 4?

- [math]P(1 or 4) = 1/2[/math]
- [math]P(1 or 4) = 1/3[/math]
- [math]P(1 or 4) = 1/4[/math]
- [math]P(1 or 4) = 1/6[/math]

5.

Kali rolls a six-sided number cube. What is the probability that the cube will land on a number less than 5?

- [math]P(<5) = 1/4[/math]
- [math]P(<5) = 1/5[/math]
- [math]P(<5) = 2/3[/math]
- [math]P(<5) = 5/6[/math]

6.

What is the probability that a six-sided number cube will land on an odd number?

- [math]P(odd) = 1/2[/math]
- [math]P(odd) = 1/3[/math]
- [math]P(odd) = 1/6[/math]
- [math]P(odd) = 5/6[/math]

7.

Which scenario for the spinner has the following probability of occurring?

[math]P(?) = 2/3[/math]

[math]P(?) = 2/3[/math]

- The spinner lands on a number less than 2.
- The spinner lands on a number less than 4.
- The spinner lands on a number greater than 2.
- The spinner lands on a number greater than 4.

8.

Which scenario for the spinner has the following probability of occurring?

[math]P(?) = 3/5[/math]

[math]P(?) = 3/5[/math]

- The spinner lands on B.
- The spinner lands on C or E.
- The spinner lands on a vowel.
- The spinner lands on a consonant.

9.

A bowl of fruit contains 2 pears, 4 oranges, and 6 apples. If 1 piece of fruit is randomly picked from the bowl, what is the probability that it will be an orange or an apple?

- [math]P(O or A) = 1/6[/math]
- [math]P(O or A) = 2/6[/math]
- [math]P(O or A) = 3/6[/math]
- [math]P(O or A) = 5/6[/math]

10.

Mrs. Flores has a shelf of magazines for her students to read. On the shelf are 6 sports magazines, 9 animal magazines, and 3 news magazines. If a student randomly selects 1 magazine from the shelf, what is the probability that it will be a magazine about animals or news?

- [math]P(S or N) = 1/2[/math]
- [math]P(S or N) = 2/3[/math]
- [math]P(S or N) = 5/6[/math]
- [math]P(S or N) = 1/9[/math]

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