Question

В пакете находится 6 синих и 4 красных значка,одинаковых на ощупь. Не глядя,из пакета берут 3 значка. Какова вероятность того,что взяли или только синие,или только красные значки?

Answer 1

Всего 10 значков значит:
10шт-100%
3шт-?%
решение:
3*100:10=30%
ответ:вероятность 30%

Answer 2

Probability of Drawing Only Blue or Only Red Tokens

To calculate the probability of drawing only blue or only red tokens from the bag, we can use the concept of combinations and the total number of ways to draw 3 tokens from the bag.

Total Number of Ways to Draw 3 Tokens The total number of ways to draw 3 tokens from the bag can be calculated using the combination formula: nCr = n! / (r!(n-r)!) where n is the total number of tokens, r is the number of tokens drawn, and ! represents factorial.

For this scenario, n = 10 (6 blue + 4 red) and r = 3.

The formula gives us the total number of ways to draw 3 tokens from the bag.

Number of Ways to Draw Only Blue Tokens The number of ways to draw only blue tokens can be calculated using the combination formula as well. We need to choose 3 tokens out of the 6 blue tokens.

Number of Ways to Draw Only Red Tokens Similarly, the number of ways to draw only red tokens can also be calculated using the combination formula. We need to choose 3 tokens out of the 4 red tokens.

Calculation of Probabilities

Using the above information, we can calculate the probabilities for drawing only blue or only red tokens. Let's proceed with the calculations.