Question

У бабушки 25 чашек 5 с красными цветами остальные с синими бабушка наливает чай в случайно выбранную чашку Найти вероятность того что это будет чашка с синими цветами

Answer 1

Вероятность равна отношению числа благоприятных исходов к общему числу исходов
(25-5)/25=20/25=0,8

Answer 2

Calculating the Probability

To find the probability of the grandmother pouring tea into a cup with blue flowers, we can use the information provided.

The grandmother has 25 cups, with 5 having red flowers and the rest having blue flowers. Therefore, the probability of pouring tea into a cup with blue flowers can be calculated as follows:

1. Calculate the total number of cups with blue flowers: - Total cups = 25 - Cups with red flowers = 5 - Cups with blue flowers = 25 - 5 = 20.

2. Determine the probability: - Probability = Cups with blue flowers / Total cups - Probability = 20 / 25 - Probability = 0.8 or 80%.

So, the probability that the grandmother will pour tea into a cup with blue flowers is 80%.