A class is made up of 10 boys and 2 girls. Half of the boys wear glasses. A student is selected at random from the class. What is the probability that the student is a boy with glasses?

My Question is, I don't know how to do Probability.

in general,

the probability of "some event"
= no of cases for that event/total number of cases

so in our case, there would be 5 boys with glasses, the "event"
the total number of students = 12

so the prob(boy with glasses) = 5/12

To find the probability of selecting a boy with glasses, we need to calculate the number of favorable outcomes (boys with glasses) over the total number of possible outcomes (total students in the class).

Given:
- Total number of boys in the class: 10
- Total number of girls in the class: 2
- Half of the boys wear glasses: 10 / 2 = 5 boys with glasses

Total number of students in the class:
10 boys + 2 girls = 12 students

Now, to calculate the probability:

Probability of selecting a boy with glasses = Number of boys with glasses / Total number of students
Probability = 5 / 12

So, the probability of selecting a boy with glasses is 5/12.

To find the probability that a student selected at random from the class is a boy with glasses, we need to determine the number of favorable outcomes and the total number of possible outcomes.

To start, let's determine the number of boys with glasses. Since half of the boys wear glasses, we can calculate that half of 10 boys is 5 boys with glasses.

Next, let's calculate the total number of students in the class. In the class, we have 10 boys + 2 girls, which makes a total of 12 students.

Therefore, the probability of selecting a boy with glasses is the number of boys with glasses divided by the total number of students:

Probability = Number of boys with glasses / Total number of students
Probability = 5 boys with glasses / 12 total students
Probability = 5/12

Therefore, the probability that the student selected at random from the class is a boy with glasses is 5/12.