Im so confused with these questions:

which of the following numbers are composite?
0,1,15,19,23,31,49,55,59,87,91,97,103,105

A. 1,23,31,59,91
B. 15,49,55,87,91,105
c. 0,1,19,23,31,105

composite means that the # can be divided by one and it's self. so that means the anser is B

that is the definition of a PRIME number..a composite number is a number that can be divided by factors other than 1 and itself!! the correct answer is B...try using divisibility rules...105 gives it away because that number can be divided by 5 so it is automatically not a prime

Which of the given numbers are composite?

0,1,15,19,23,31,49,55,59,87,91,97,103,
105

cpkb conygrst yhcr rwthxg xrdtziolf elyzf tniockl

To determine which of the given numbers are composite, we need to understand the concept of composite numbers.

A composite number is a positive integer greater than 1 that has factors other than 1 and itself. In other words, a composite number can be divided evenly by numbers other than 1 and itself.

Let's analyze each option:

Option A: 1,23,31,59,91
To determine if these numbers are composite, we need to check if they have any factors other than 1 and themselves.

- 1 is not considered a composite number since it doesn't have any factors other than 1.
- 23 and 31 are prime numbers since they cannot be divided evenly by any number other than 1 and themselves.
- 59 is a prime number for the same reason mentioned above.
- 91 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 7 and 13).

Therefore, in Option A, only 91 is a composite number.

Option B: 15,49,55,87,91,105
Let's apply the same analysis to Option B:
- 15 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 3 and 5).
- 49 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 7).
- 55 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 5 and 11).
- 87 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 3 and 29).
- 91 is a composite number for the same reason mentioned above.
- 105 is a composite number since it can be divided evenly by numbers other than 1 and itself (e.g., 3, 5, 7, and 15).

So in Option B, all the numbers listed are composite numbers.

Option C: 0,1,19,23,31,105
- 0 is not considered a composite number since it doesn't have any factors.
- 1 is not a composite number since it doesn't have any factors other than 1.
- 19, 23, and 31 are prime numbers since they cannot be divided evenly by any number other than 1 and themselves.
- 105 is a composite number for the reasons mentioned above.

Therefore, in Option C, only 105 is a composite number.

To summarize, the composite numbers from the given options are:

Option A: 91
Option B: 15, 49, 55, 87, 91, 105
Option C: 105