    Sentence 1: If the Indian government  announces to withdraw Rs. 500 and Rs.  1000 notes in a. month what will be the  impact of it on unaccounted (black) money  in our economy?    Sentence 2: Isn't it illogical to issue new Rs.  2000 notes while devaluing Rs. 1000 and  500 notes to curb black money by the  Central Government of India?