Question

How many rational numbers lie between-2/3 and 7/3​

Answer 1

{x:x=-2/3-7/3}

Explanation:

B/c ther are many rational number between them.

so that let me make some example

x>4/5 x€Q then the solution set is {x€Q:x>4/5} just like that

Answer 2

infinite

Explanation:

name two, and then find a third in between them.

you can repeat that as often as you want.