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In a class of 40 students, 25 are girls. What is the probability of selecting a

Practice Questions

Q1
In a class of 40 students, 25 are girls. What is the probability of selecting a boy?
  1. 0.375
  2. 0.625
  3. 0.5
  4. 0.25

Questions & Step-by-Step Solutions

In a class of 40 students, 25 are girls. What is the probability of selecting a boy?
  • Step 1: Identify the total number of students in the class, which is 40.
  • Step 2: Identify the number of girls in the class, which is 25.
  • Step 3: Calculate the number of boys by subtracting the number of girls from the total number of students: 40 - 25 = 15.
  • Step 4: Write down the number of boys, which is 15.
  • Step 5: To find the probability of selecting a boy, divide the number of boys by the total number of students: 15 / 40.
  • Step 6: Simplify the fraction 15 / 40 to get 0.375.
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