Question

Бабушка испекла ко дню рождения Василия пирожные: с вишней — 2 штук(-и), с заварным кремом — 4 штук(-и), и с шоколадом — их было 2. Найди вероятность того, что Василий, не дождавшись гостей, съест пирожное с шоколадом. (После вычисления ответ округли до сотых.) Ответ: вероятность того, что Василий съест пирожное с шоколадом:

Answer 1

Ответ:

вероятность того, что Василий съест пирожное с шоколадом:
0.25

Объяснение:

p=2/(2+2+4)=2/8=1/4=0.25

Answer 2

Problem Analysis

We are given that Vasily's grandmother baked some pastries for his birthday. The pastries include 2 with cherries, 4 with custard cream, and 2 with chocolate. We need to find the probability that Vasily will eat a pastry with chocolate before the guests arrive.

Solution

To find the probability, we need to determine the total number of pastries and the number of pastries with chocolate.

The total number of pastries is the sum of the pastries with cherries, custard cream, and chocolate: Total pastries = 2 (with cherries) + 4 (with custard cream) + 2 (with chocolate) = 8.

The number of pastries with chocolate is given as 2.

Therefore, the probability that Vasily will eat a pastry with chocolate is given by: Probability = Number of pastries with chocolate / Total number of pastries.

Substituting the values, we have: Probability = 2 / 8 = 0.25.

Rounding the answer to the nearest hundredth, the probability that Vasily will eat a pastry with chocolate before the guests arrive is 0.25.

Answer

The probability that Vasily will eat a pastry with chocolate before the guests arrive is 0.25.