QUESTION: answer this: when did the samsung galaxy s8 plus come out??

ANS: on 21 April 2017

QUESTION: answer this: when was noise pollution added to pollution list??

ANS: 1972

QUESTION: answer this: when was the first ever star wars movie made??

ANS: 1977

QUESTION: answer this: when was advance australia fair proclaimed as the national anthem??

ANS:
19 April 1984