Question

В лыжных гонках участвуют 9 спортсменов из России, 9 из Норвегии и 12 из Швеции. Найдите вероятность того,что первым будет спортсмен из Швеции.

Answer 1

9+9+12=30 ( всего спортсменов)
Ответ:
P=12/30

Answer 2

Calculation of Probability

To find the probability that the first athlete will be from Sweden, we need to calculate the ratio of the number of Swedish athletes to the total number of athletes participating in the race.

According to the information provided, there are 9 athletes from Russia, 9 athletes from Norway, and 12 athletes from Sweden participating in the race.

The total number of athletes participating in the race is 9 (Russia) + 9 (Norway) + 12 (Sweden) = 30.

Therefore, the probability that the first athlete will be from Sweden is 12/30.

Calculation:

Probability = Number of favorable outcomes / Total number of possible outcomes

Number of favorable outcomes = Number of athletes from Sweden = 12 Total number of possible outcomes = Total number of athletes participating in the race = 30

Probability = 12/30 = 0.4

Therefore, the probability that the first athlete will be from Sweden is 0.4.