Question

Dr. Owino needs two students to help him with a science demonstration for his class of 18 girls and 12 boys. He randomly chooses one student who comes in front of classroom. He then chooses a second student from those still seated. What is the probability that both students chosen are girls? 

Answer 1

$P = \frac{18}{30} \times \frac{17}{29} \\ = \frac{51}{145} \\ = 0.352$