What number should replace the question mark?
3 12 6 2 7 5 15 9 18 12 11 4 8 8 3 4 15 11 12 ?
THE ANSWER IS 7 3 12 6 3+12=15 12+6=18 2 7 5 2+7=9 7+5=12 11 4 8 11+4=15 4+8=12 8 3 4 8+3=11 3+4=7
7 8+3 = 11 4+3 = 7
27 28 32 93 54 40 48 64 48 67 84 64 55 50 ?
28 -> 9
52 -> 15
84 -> 23
20 -> 7
100 -> ?
83517
52649
30868
21781
0908?