Im so confused with these questions:

Question

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

Answer 1

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

Answer 2

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

Answer 3

Which of the given numbers are composite?

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

Answer 4

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