How many numbers are composite out of these?
17,20,19,25,24,100
4 numbers?
Yes
To determine how many numbers are composite out of the given numbers (17, 20, 19, 25, 24, 100), we need to identify which numbers are composite and count them.
A composite number is a positive integer greater than 1 that has divisors other than 1 and itself.
Let's check each number:
1. 17: It is a prime number because it only has two divisors - 1 and itself.
2. 20: It is a composite number because it has more than two divisors. For example, it can be divided evenly by 2, 4, 5, and 10.
3. 19: It is a prime number.
4. 25: It is a composite number because it can be divided evenly by 5 and 25.
5. 24: It is a composite number because it can be divided evenly by 2, 3, 4, 6, 8, and 12.
6. 100: It is a composite number because it can be divided evenly by 2, 4, 5, 10, 20, and 50.
Therefore, there are 4 numbers that are composite out of the given numbers.
To determine the number of composite numbers from the given list, we need to understand what composite numbers are.
A composite number is a positive integer greater than 1 that has more than two distinct positive divisors. In other words, a composite number can be divided evenly by at least one number other than 1 and itself.
To determine if a number is composite, we need to check if it has any factors other than 1 and itself. A simple way to do this is by testing divisibility by numbers between 2 and the square root of the number.
Let's go through each number and check if it is composite:
17: 17 is a prime number because it has no factors other than 1 and itself.
20: 20 is a composite number because it can be divided evenly by 2, 4, 5, and 10.
19: 19 is a prime number because it has no factors other than 1 and itself.
25: 25 is a composite number because it can be divided evenly by 5.
24: 24 is a composite number because it can be divided evenly by 2, 3, 4, 6, 8, and 12.
100: 100 is a composite number because it can be divided evenly by 2, 4, 5, 10, 20, 25, and 50.
From the given list, there are 4 composite numbers: 20, 25, 24, and 100.