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?
  1. 0.5
  2. 0.9
  3. 1.0
  4. 0.3
2. 
If an event has a 0.9 probability of occurring, the event is:
  1. Certain to not occur
  2. Unlikely to occur
  3. Very likely to occur
  4. Certain to occur
3. 
If an event has a 0.1 probability of occurring, the event is:
  1. Certain to occur
  2. Unlikely to occur
  3. Certain to not occur
  4. Very likely to occur
4. 
If an event has a 0.5 probability of occurring, the event:
  1. Is certain to occur
  2. Is certain to not occur
  3. Has equal chance of occurring as of not occurring
  4. 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?
  1. [math]1/5[/math]
  2. [math]1/200[/math]
  3. [math]200/1000[/math]
  4. [math]1/1000[/math]
6. 
If the spinner below is spun once, what is the probability that it will land on yellow if the answer is expressed as a decimal?
Spinner With Colors - Uneven
  1. [math]1/2[/math]
  2. 0.3
  3. [math]1/3[/math]
  4. 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?
  1. [math]1/3[/math]
  2. [math]3/10[/math]
  3. [math]7/10[/math]
  4. There is no way of knowing
8. 
If the spinner below 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?
Spinner With Numbers
  1. 0.17
  2. 0.6
  3. 0.4
  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?
  1. [math]1/4[/math]
  2. [math]2500/10000[/math]
  3. [math]1/2500[/math]
  4. [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?
  1. [math]1/25[/math]
  2. [math]25/500[/math]
  3. [math]1/20[/math]
  4. [math]1/500[/math]

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