Question

MATH HELP
!!!!!1!!!!!!!!!

Answer 1

B is true

Explanation:

A is not correct since a natural number minus another natural number can be a negative, and a negative is not a natural number, therefore natural numbers are not closed under subtraction.

B is correct.

C is wrong because natural numbers are indeed closed under addition.

D is wrong with the same reason as C.

Hope this helps, Namarie guys!

Answer 2

The set of natural number is

1, 2, 3, 4, 5, ...

A. Any two natural numbers you add will give you a natural number.
When you subtract natural numbers, you don't always get a natural number, so option A is out.

B. Option B is true.

C. False

D. False