no..she is neither 21 nor 22..she is 24 as said by anjali..
in the pervious episodes when the adoption secret was out..in the adoption papers the year of adoption was 1983 or 1984 .......so ridz must be 24 or 23..!! 😉
and i don't think that's an early age to be a doctor as my sister passed her mbbs just now and she is 24 years old!!