Question

В лыжных гонках участвуют 11 спортсменов из России, 6 спортсменов из Норвегии и 3 спортсмена из Швеции. Порядок, в котором спортсмены стартуют, определяется жребием. Найдите вероятность того, что первым будет стартовать спортсмен не из России

Answer 1

11 + 6 + 3 = 20 спортсменов всего
6 + 3 = 9 спортсменов не из России
$\frac{9}{20}$ = 0.45

ответ: 0.45

Answer 2

Probability of a non-Russian athlete starting first in a ski race

To find the probability of a non-Russian athlete starting first in a ski race, we need to calculate the ratio of the number of non-Russian athletes to the total number of athletes.

According to the information provided, there are 11 athletes from Russia, 6 athletes from Norway, and 3 athletes from Sweden participating in the race. The order in which the athletes start is determined by a draw.

To calculate the probability, we divide the number of non-Russian athletes (9) by the total number of athletes (20):

Probability = Number of non-Russian athletes / Total number of athletes = 9 / 20 = 0.45

Therefore, the probability that a non-Russian athlete will start first in the ski race is 0.45 or 45%.