Conversation so far:
who prints and supplies the currency notes in india
The Reserve Bank of India prints and manages currency in India, whereas the Indian government regulates what denominations to circulate.
when did the reserve bank introduce the mahatma gandhi series
The Reserve Bank has introduced banknotes in the Mahatma Gandhi Series since 1996
what denominations were introduced in the mahatma gandhi series
The Reserve Bank has introduced banknotes in the Mahatma Gandhi Series since 1996 and has issued notes in the denominations of 5, 10, 20, 50, 100, 500 and 1000 rupees
which rupee banknotes were withdrawn
Withdrawn Indian rupee banknotes include the 500 and 1000 rupee bills that were cancelled in 2016.

Question: can you still exchange the notes at the bank
Self-contained rewrite: can you still exchange 500 and 1000 rupee bills at the bank