What number should replace the question mark?
Answer: 2 Two. In each group of circles, add the three top numbers to give the bottom two (5 + 3 + 4 = 12).
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?