A class of 6 boys and 12 girls are preparing for finals. The teacher is going to select 3 students to be exempt from the test. What is the probability that the three students that are exempt will be all boys?

Step-by-step explanation:

Given:

In a class:

Number of boys = 6

Number of girls = 12

The teach has to select 3 students to be exempted from the test.

To find the probability that all boys students are exempted from the exam.

Solution:

Total number of students in the class =

Number of ways to select 3 students among 18 from the class can be given =

Total number of boys = 6

Number of ways to select 3 students among 6 boys can be given =

So, the probability of selecting all 3 students as boys can be given as =

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⇒  (Answer)