Question

True or false :
a) Integers are closed under addition [ ].
b) Integers are not closed under subtraction.[ ].
c) Whole numbers are closed under subtraction [ ].
d) Integers are not closed for commutative property under addition [ ].
please read the question properly and then answer the question properly ​

Answer 1

Answer:

1.Ture 2.false 3.false 4.Ture

Answer 2

Answer:

a) True

b) False

c) False

d) ???

Sorry,I can't really solve the last one