Test your brains with the Herald's revamped morning quiz. Be sure to check nzherald.co.nz later today for another trivia fix with our new afternoon quiz.
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In what year did the second and final flag referendum occur, in which we chose to keep our current flag? Photo / Getty Images
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The issue is believed to have been caused by cybersecurity firm CrowdStrike, and has affected transport, flights, banks and supermarkets around the world. Video / CNBC