Question

A student is chosen at random from a class of 10 boys and 20 girls. What are the odds that a girl is not chosen?

Answer 1

10/30 = ?

Answer 2

10/20

Answer 3

[AI-generated answer — Explain Bot]

To find the odds that a girl is not chosen, we need to calculate the probability of selecting a boy instead.

First, let's determine the total number of students in the class by combining the number of boys and girls: 10 boys + 20 girls = 30 students.

Since we want to find the probability of selecting a boy, we need to determine the number of boys in the class. In this case, it is 10 boys.

The probability of selecting a boy can be calculated by dividing the number of boys by the total number of students: P(boy) = number of boys / total number of students = 10 / 30 = 1/3.

Finally, to find the odds, we need to compare the probability of selecting a boy to the probability of selecting a girl: odds = P(boy) / P(girl) = (1/3) / (2/3) = 1/2.

Therefore, the odds that a girl is not chosen is 1/2 or 50%.