Which of the following addresses are exactly identical?

Amit Verma, 12A, Green Park, Delhi, 110016
Amit Verma, 12A Green Park, Delhi, 110016
Amit Verma, 12A, Green Park, Delhi, 110018
Amit Verma, 12A, Green Park, Delhi, 110016

The correct option is 1 and 4.

To determine which addresses are exactly identical, let us analyze each of the given addresses character by character:

1. Amit Verma, 12A, Green Park, Delhi, 110016
2. Amit Verma, 12A Green Park, Delhi, 110016 (Missing comma after "12A")
3. Amit Verma, 12A, Green Park, Delhi, 110018 (Pincode ends in "110018" instead of "110016")
4. Amit Verma, 12A, Green Park, Delhi, 110016

Comparing address 1 and address 4:
Both addresses have the exact same spelling, punctuation, capitalization, spaces, and pincode: Amit Verma, 12A, Green Park, Delhi, 110016.

Therefore, addresses 1 and 4 are completely identical.