Answer:
1/12 ≈ 8.33%
Step-by-step explanation:
If there's only 3 girls, then there's no way that a group of 5 can be all girls. I assume you mean that there are 7 girls and 3 boys?
The number of ways to choose 5 students from 10 is ₁₀C₅. This is the total number of combinations possible.
The number of ways to choose 5 students from 7 girls is ₇C₅.
So the probability is:
P = ₇C₅ / ₁₀C₅
P = 21 / 252
P = 1 / 12
P ≈ 8.33%
