Question

A) 66
B) 51
C) 49
D) 34

Answer 1

E) 32 and F) 17 and G) 0
because 
A - C = 66-49 = 17
B - D = 51-34 = 17
C - E = 49-32 = 17
D - F = 34-17 = 17 
E - G = 17-17 = 17