Question

Сколько простых и сколько составных чисел среди чисел от 1 до 100?

Answer 1

25 простых и 75 составных

Answer 2

25 простых 75 составных

Answer 3

Number of Prime and Composite Numbers from 1 to 100

To determine the number of prime and composite numbers from 1 to 100, we can use the following information:

Prime Numbers: - Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. - The prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97.

Composite Numbers: - Composite numbers are natural numbers greater than 1 that are not prime, meaning they have divisors other than 1 and themselves. - The composite numbers from 1 to 100 are the remaining numbers after removing the prime numbers.

Calculation

The number of prime and composite numbers from 1 to 100 can be calculated as follows:

- Prime Numbers: There are 25 prime numbers from 1 to 100. - Composite Numbers: To find the number of composite numbers, we subtract the number of prime numbers from the total count of numbers from 1 to 100, which is 100. Therefore, the number of composite numbers is 100 - 25 = 75.

Conclusion: - There are 25 prime numbers and 75 composite numbers from 1 to 100.