Multiple choice general knowledge sports Pick the odd one out from the following ? (Clue: Dates) 31st June 1999 29th February 2000 29th April 1998 31st August 1997 Reveal answer Fill a bubble to check yourself A Correct answer Explanation June has only 30 days, so '31st June 1999' is an invalid date that cannot exist. All other options are valid dates: 29th February 2000 (leap year), 29th April 1998, and 31st August 1997 are all calendar-valid dates.