Question

Среди учеников класса 8 человек играют в онлайн игры, что составляет 20% от общего количества учащихся. Определите, какова вероятность того, что случайно выбранный ученик играет в онлайн игры?

Answer 1

Вероятность равна 20/100=0,2

Answer 2

Calculation of Probability

To determine the probability that a randomly chosen student plays online games, we need to use the given information that 20% of the total number of students in the class play online games.

The total number of students in the class is not provided, but we know that the 8 students who play online games make up 20% of the total number of students.

Let's assume the total number of students in the class is represented by the variable 'N'.

According to the given information, we have the equation:

8 = 0.2 * N

To find the value of 'N', we can rearrange the equation:

N = 8 / 0.2

Simplifying the equation, we get:

N = 40

Therefore, the total number of students in the class is 40.

Now, to calculate the probability that a randomly chosen student plays online games, we divide the number of students who play online games (8) by the total number of students in the class (40):

Probability = Number of students who play online games / Total number of students

Probability = 8 / 40

Simplifying the equation, we get:

Probability = 0.2

Therefore, the probability that a randomly chosen student from the class plays online games is 0.2 or 20%.