11
a- -b ---> (a+1)/3=b (8+1)/3=3 (47+1)/3=16 (20+1)/3= 7 (59+1)/3= 20 (32+1)/3= 11
What number should replace the question mark?
143 - - - 22
26 - - - 4
104 - - - 16
65 - - - ?