To get the number in the white sector of each circle:
1. We have to first add all the 3 digits in the green sectors of the circle
2. Then divide the sum by 2.
For Instance:
1] 32 + 24 + 48 = 104
104/2 = 52
2] 23 + 35 + 46 = 104
104/2 = 52
3] 16 + 38 + 54 = 108
108/2 = 54
4] 27 + 33 + 42 = 102
102/2 = 51.
