Question

all rational numbers formulas

Answer 1

All rational numbers are in the form of a/b

BTW I'm not clear with your question
hope it is right :)

Answer 2

→All rational numbers are in the form of p/q.

→A rational number between any two given numbers a and b is given by (a+b)/2

→An irrational number between any two given numbers a and b is given by √ab.

Hope it helps