Question

Exercise 4.2
1
State whether the following are true or
false.
(i) The sum of two negative integers
is always positive.
(ii) The sum of two positive integers
is always positive.
(iii) The sum of two integers is not
always an integer.
(iv) The closure property states that
if a and b are two integers, then
a + b = b + a.
(v) If a, b and c are three integers,
then (a - b) - c = a - (b-c).​

Answer 1

Step-by-step explanation:

1. FALSE
2. TRUE
3. FALSE
4. FALSE
5. TRUE