Question

insert 16 rational number between 2.1 and 2.2

Answer 1

the 16 rational no.s between 2.1 & 2.2 are -
2.11, 2.12, 2.13, 2.14, 2.15, 2.16, 2.17 ,2.18 ,
2.112, 2.113, 2.114, 2.115, 2.116,
2.117, 2.118, 2.119

Answer 2

we may write 2.1 as 2100/1000.
and 2.2 as 2200/ 1000
so 16 rational no. can be 2101/1000 ,2102/1000,2103/1000 .......and so on.