Insert 16 rational numbers between 2.1 and 2.2.
We can insert infinite rational numbers between any given rational numbers .it is called density property
16 rational numbers between 2.1 and 2.2 = 2.11 , 2.115 , 2.12 ,2.125 , 2.13 , 2.135 , 2.14 , 2.145 , 2.15 , 2.155 , 2.16 , 2.165 , 2.17 ,2.175 , 2.18 , 2.185