1/2 ( U+V) - THIS IS THE FORMULA TO FIND RATIONAL NUMBER IN BETWEEN
lets take U = 1.203 V = 1.211
these 2 are two rational numbers between 1.20200200... and 1.212112111 as they can be expressed as p/q ( 1.203 = 1203/1000 , 1.211 = 1211/1000 )
we need 2 more , applying formula
1/2(1.203 + 1.211) = 1.207
now we are finding a rational number between 1.203 and 1.207 which will be between 1.203 and 1.211
1/2 (1.203 + 1.207) = 1.205
so they are 1.203 , 1.211 , 1.207 , 1.205