Here's a breakdown:

* Apollo 1-6: These were test flights and missions focusing on developing the spacecraft and crew capabilities.

* Apollo 7-10: These were Earth orbital missions focusing on testing the Command and Service Module (CSM) and Lunar Module (LM) in space.

* Apollo 11-17: These were lunar missions that landed astronauts on the moon.

It's worth noting that Apollo 1 tragically resulted in the deaths of the three astronauts during a launchpad fire. This mission was a tragic setback but crucial in understanding and improving safety protocols.