Let’s solve each question step by step.
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Question 1:
> Your class has 25 students. 11 of them are girls.
> What is the probability of choosing a boy if you choose a student at random?
Step 1: Total students = 25
Step 2: Girls = 11 → So boys = 25 - 11 =
14
Step 3: Probability of choosing a boy = number of boys / total students =
14 out of 25
Correct answer:
(b) 14 out of 25
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Question 2:
> 4 of the students are absent today, 3 boys and 1 girl.
> If you choose a student at random from those who are present, what is the probability of choosing a girl?
Step 1: Originally 11 girls, 14 boys (from Q1).
Step 2: Absent: 3 boys + 1 girl → Present girls = 11 - 1 =
10
Present boys = 14 - 3 =
11
Total present = 10 + 11 =
21
Step 3: Probability of choosing a girl from present students = 10 / 21
Correct answer:
(c) 10/21
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Question 3:
> If you choose a student at random out of the 25 students in your class, what is the probability of choosing an adult?
Assumption: In a typical school class, all 25 students are children — not adults.
So, there are
0 adults in the class.
Probability = 0 / 25 = 0 → This means it’s
impossible to choose an adult.
Correct answer:
(c) Impossible
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Question 4:
> Out of the 25 students in your class, are you more likely to choose a boy or a girl at random?
From Q1: Boys = 14, Girls = 11
Since 14 > 11, you are more likely to pick a
boy.
Correct answer:
(b) A boy
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Final Answer:
1. (b)
2. (c)
3. (c)
4. (b)
Parent Tip: Review the logic above to help your child master the concept of probability of numbers worksheet answers.
