Question

В лыжных гонках участвуют 11 спортсменов из россии 6 спортсменов из норвегии и 3 спортсмена из швеции порядок в котором спортсмены стартуют определяется жрубием найдите вероятность того что первым будет стартовать спортсмен из норвегии или швеции

Answer 1

всего спортсменов в соревнованиях 20,из норвеии и швеции 9

получается 9 делим на 20,вот и вероятность,получается 0.45

Ответ:0.45

Answer 2

To find the probability that a skier from Norway or Sweden starts first in the race, we need to consider the total number of skiers and the number of skiers from Norway and Sweden.

Given: - 11 skiers from Russia - 6 skiers from Norway - 3 skiers from Sweden

To calculate the probability, we divide the number of favorable outcomes (skiers from Norway or Sweden starting first) by the total number of possible outcomes (all skiers starting in any order).

Total Number of Skiers

The total number of skiers participating in the race is the sum of skiers from Russia, Norway, and Sweden: Total Skiers = 11 (Russia) + 6 (Norway) + 3 (Sweden) = 20 skiers

Number of Favorable Outcomes

The number of favorable outcomes is the number of skiers from Norway and Sweden, which is 6 + 3 = 9 skiers.

Probability Calculation

To find the probability, we divide the number of favorable outcomes by the total number of skiers: Probability = Number of Favorable Outcomes / Total Number of Skiers

Probability = 9 / 20

Therefore, the probability that a skier from Norway or Sweden starts first in the race is 9/20.

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