2.Which of the following is an example of closure.

Question

a. The equation 4−6=−2 is an example of the whole numbers being closed under subtraction.
b. The equation 1.5+1.6=3.1 is an example of the rational numbers being closed under addition.
c. The equation 1+0=1 is an example of the natural numbers being closed under addition.********
d. The equation 5−5=0 is an example of the natural numbers being closed under subtraction.
3.Which of the following statements about sets of numbers is true?
a. All integers are rational numbers.

b. All rational numbers are natural numbers.

c. All irrational numbers are integers.******

d. All integers are whole numbers.
can someone plz check my answers that would be much appreciated!

Answer 1

#2 Nope. 0 is not a natural number. B is better
#3 Nope. No irrational number is rational, hence not an integer. You want A.