Has a FIBA World Cup game ever ended 104-76?
Exactly once. On August 14, 1994, Canada beat China 104-76, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 104-76 in league history.
That makes 104-76 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 105-76 has happened never and 104-77 has happened never.