Is it duble benefit

is it double benefit  (red colour)     

Q.. Mr .X - salary income-530000 , interest income from post office-15000. calculate totale income of Mr. X

Ans.-income under the head salary

                                                salary income= 530000

        income under the head other source

                              interest income= 15000 

                           exempt u/s 10(15)=15000    = nil  

                           gross total income                 =  530000

         deduction under chapter- 6(80c-80u)

       80TTA-interest income from post office=   10000

                             total income                          =    520000