# Chance Events (Grade 7)

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## Chance Events

1.

Which of the following answers represents the probability of an event that is not likely to happen?

- 0.5
- 0.9
- 1.0
- 0.3

2.

If an event has a 0.9 probability of occurring, the event is

- certain to not occur.
- unlikely to occur.
- very likely to occur.
- certain to occur.

3.

If an event has a 0.1 probability of occurring, the event is

- certain to occur.
- unlikely to occur.
- certain to not occur.
- very likely to occur.

4.

If an event has a 0.5 probability of occurring, what can be said about the event?

- It is certain to occur.
- It is certain to not occur.
- It has an equal chance of occurring as of not occurring.
- Not enough information is provided.

5.

An electronics company makes microchips for the latest smartphones. If the company sent out a package with 1000 microchips and 5 of them ended up being defective due to a factory machine malfunctioning, what is the chance of a customer getting a defective microchip?

- [math]1/5[/math]
- [math]1/200[/math]
- [math]200/1000[/math]
- [math]1/1000[/math]

6.

If the spinner is spun once, what is the probability that it will land on yellow if the answer is expressed as a decimal?

- [math]1/2[/math]
- 0.3
- [math]1/3[/math]
- 0.5

7.

A ticket draw bag is full of different classes of tickets. If the bag is [math]1/5[/math] full of first class tickets and [math]1/2[/math] full of middle class tickets, what is the probability of pulling out a ticket that is neither first class or middle class?

- [math]1/3[/math]
- [math]3/10[/math]
- [math]7/10[/math]
- There is no way of knowing

8.

If the spinner is spun once, what is the probability that it will land on 4 if the answer is expressed as a decimal rounded to the nearest hundredth?

- 0.17
- 0.6
- 0.4
- 0.16

9.

A family of 4 has each picked out a lottery ticket for a family cruise. If the total number of tickets produced is 10,000, what is that probability that a member of the family will win the lottery?

- [math]1/4[/math]
- [math]2500/10000[/math]
- [math]1/2500[/math]
- [math]1/10000[/math]

10.

A book has 500 pages. If the book has 25 chapters and each chapter is 20 pages long, what is the chance of randomly opening the book to chapter 12?

- [math]1/25[/math]
- [math]25/500[/math]
- [math]1/20[/math]
- [math]1/500[/math]

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