In defining "Effective literacy rate", the denominator is
Effective literacy rate = Number of literate persons aged 7 and above* 100 / Population aged 7 and above in a given year.Ref:- Park. 23rd ed. Page no 486
Total literate population
Population aged 7 yrs and above in a given year
Total mid-year population
Number of literate persons aged 7yrs and above
Demography and family planning