If a student is selected at random from a group of 10 boys and 15 girls, what is

Practice Questions

Q1
If a student is selected at random from a group of 10 boys and 15 girls, what is the probability that the student is a girl? (2023)
  1. 1/2
  2. 3/5
  3. 2/5
  4. 1/3

Questions & Step-by-Step Solutions

If a student is selected at random from a group of 10 boys and 15 girls, what is the probability that the student is a girl? (2023)
  • Step 1: Count the number of boys in the group. There are 10 boys.
  • Step 2: Count the number of girls in the group. There are 15 girls.
  • Step 3: Add the number of boys and girls together to find the total number of students. 10 boys + 15 girls = 25 students.
  • Step 4: Identify how many of the total students are girls. There are 15 girls.
  • Step 5: To find the probability of selecting a girl, divide the number of girls by the total number of students. This is 15 girls / 25 total students.
  • Step 6: Simplify the fraction 15/25. Both numbers can be divided by 5, which gives us 3/5.
  • Probability – The likelihood of an event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.
  • Basic Arithmetic – The ability to perform simple addition and division to find totals and ratios.
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