Number 1 should be 78 (1+2+3+4+5+6+7+8+9+10+11+12)

#1, nope, its: 364 He gets 78 things on the 12th day. (1+3+6+10+15+21+28+36+45+55+66+78) on the first day he gets one thing (1 thing). on the second day, he gets another one of those things...