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In a group of 50 people, 20 are smokers. What is the probability of selecting a

Practice Questions

Q1
In a group of 50 people, 20 are smokers. What is the probability of selecting a non-smoker? (2022)
  1. 2/5
  2. 3/5
  3. 1/2
  4. 1/4

Questions & Step-by-Step Solutions

In a group of 50 people, 20 are smokers. What is the probability of selecting a non-smoker? (2022)
  • Step 1: Identify the total number of people in the group, which is 50.
  • Step 2: Identify the number of smokers in the group, which is 20.
  • Step 3: Calculate the number of non-smokers by subtracting the number of smokers from the total number of people: 50 - 20 = 30.
  • Step 4: Write the probability of selecting a non-smoker as the number of non-smokers divided by the total number of people: 30/50.
  • Step 5: Simplify the fraction 30/50 to its simplest form: 30/50 = 3/5.
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