Has a FIBA World Cup game ever ended 72-56?
Exactly once. On August 23, 1982, Uruguay beat China 72-56, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 72-56 in league history.
That makes 72-56 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 73-56 has happened 1 times and 72-57 has happened 1 times.