Question

Из множества натуральных чисел от 25 до 39 наудачу выбирают одно число.какова вероятность того,что оно делится на 5?

Answer 1

От 25 до 39 на 5 делиться 25, 30 и 35 т.е. 3 числа из 15
Вероятность $\frac{3}{15} = \frac{1}{5}$

Answer 2

Calculating the Probability of Selecting a Number Divisible by 5

To calculate the probability of selecting a number between 25 and 39 that is divisible by 5, we need to determine the total number of favorable outcomes and the total number of possible outcomes.

Total Number of Favorable Outcomes: The numbers between 25 and 39 that are divisible by 5 are 25, 30, and 35.

Total Number of Possible Outcomes: The total number of natural numbers between 25 and 39 is 15.

Calculating the Probability

The probability (P) of selecting a number between 25 and 39 that is divisible by 5 can be calculated using the formula: P = (Number of Favorable Outcomes) / (Total Number of Possible Outcomes)

Substituting the values: P = 3 / 15 = 1 / 5

Therefore, the probability of selecting a number between 25 and 39 that is divisible by 5 is 1/5.