Alex said there is 21 full half hours. A full half hour is 30 minutes, but an episode is only 21 minutes. So 21 x 30 = 630, divided by 21 = 30. Thus, it is 30 episodes in Season 1, not 21. USE MORE COMMON SENSE.
-One dies and one survives. Then the one who died-didn't die. And the one who survived-survived when he got $-12, which he didn't.