Question

В классе учится 12 девочек и 17 мальчиков .Один учащийся опоздал в школу .Какова вероятность того ,что это : 1) был мальчик ; 2)была девочка ?

Answer 1

41%девочки
59мальчики

Answer 2

41% вероятность девочки, 59% мальчики

Answer 3

Given Information:

- There are 12 girls and 17 boys in the class. - One student arrived late to school.

Probability of the Late Student Being a Boy:

To calculate the probability that the late student is a boy, we need to determine the ratio of boys to the total number of students in the class.

The total number of students in the class is the sum of the number of girls and boys, which is 12 + 17 = 29.

The probability of the late student being a boy can be calculated as follows:

Probability of the late student being a boy = Number of boys / Total number of students

Probability of the late student being a boy = 17 / 29

Therefore, the probability that the late student is a boy is 17/29.

Probability of the Late Student Being a Girl:

Similarly, to calculate the probability that the late student is a girl, we need to determine the ratio of girls to the total number of students in the class.

The probability of the late student being a girl can be calculated as follows:

Probability of the late student being a girl = Number of girls / Total number of students

Probability of the late student being a girl = 12 / 29

Therefore, the probability that the late student is a girl is 12/29.

To summarize: 1) The probability that the late student is a boy is 17/29. 2) The probability that the late student is a girl is 12/29.

Please note that these calculations assume that the probability of a student being late is independent of their gender.

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