The sum of each two adjacent blocks gives the number above. What number should replace the question mark?
88
see solution below
What number should replace the question mark?
27 28 32 93 54 40 48 64 48 67 84 64 55 50 ?
28 -> 9
52 -> 15
84 -> 23
20 -> 7
100 -> ?
143 - - - 22
26 - - - 4
104 - - - 16
65 - - - ?