Question

a=2/5 b=3/5 c=4/5 verify each of the following statements.
(i) The collection of all non-zero rational numbers is closed under division
(ii) Subtraction is not commutative for rational numbers.
(iii) Division is not associative for rational numbers.
(iv) Distributive property of multiplication over subtraction is true for
numbers. That is, a(b-c)= ab - ac.
(v) The mean of two rational numbers is rational and lies between them.​

Answer 1

Answer:

I) yes

2)yes

3)yes

4)no

5)yes