971How many days does February have during a leap year?
972How many individual items make up one dozen?
973How many years make up one century?
974How many years make up one decade?
975How many degrees are there in a complete circle?
976How many degrees are there in a right angle?
977How many items make up one gross, a traditional counting unit?
978A nautical speed unit called a “knot” is equal to one nautical mile per what unit of time?
979How many continents are generally recognized in most geography classifications?
980How many major oceans are recognized in most modern geography classifications, including the Southern Ocean?
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