Question

Ребят помогите задача за 6класс В коробке лежат 10 розовых и 18 чёрных шаров Какова вероятность того что выбранный наугад шар окажется1)розовым2)желтым3)розовым или чёрным

Answer 1

Розовым 10/18 = 5/9,
желтым 0, 
розовым или черным 1=100%.

Answer 2

Probability of Drawing Different Colored Balls from a Box

To calculate the probability of drawing different colored balls from the box, we can use the following formulas:

1. Probability of drawing a pink ball (rosy pink): - Total pink balls = 10 - Total balls = 10 (pink) + 18 (black) = 28 - Probability = (Number of pink balls) / (Total number of balls)

2. Probability of drawing a yellow ball: - There are no yellow balls in the box, so the probability of drawing a yellow ball is 0.

3. Probability of drawing either a pink or a black ball: - Probability = (Number of pink balls + Number of black balls) / (Total number of balls)

Let's calculate these probabilities using the given information.

1. Probability of drawing a pink ball: - Total pink balls = 10 - Total balls = 28 - Probability = 10 / 28 = 5 / 14 ≈ 0.3571

2. Probability of drawing a yellow ball: - Since there are no yellow balls in the box, the probability of drawing a yellow ball is 0.

3. Probability of drawing either a pink or a black ball: - Probability = (Number of pink balls + Number of black balls) / (Total number of balls) - Probability = (10 + 18) / 28 = 28 / 28 = 1

So, to summarize: 1. The probability of drawing a pink ball is approximately 0.3571. 2. The probability of drawing a yellow ball is 0. 3. The probability of drawing either a pink or a black ball is 1.