Question

9999=4
8888=8
1816=3
6666=4
8686=6
1212=0
6989=?​

Answer 1

Answer:

Actually this puzzle is a picture puzzle. If you look carefully there are four circles in 9999, one in every 9. Therefore 9999 = 4, eight circles in 8888, two in every 8, so 8888 = 8, three circles in 1816, two in 8 and one in 6, so 1816 = 3, no circles in 1212, so 1212 = 0 and two circles in 1919, one in every 9. Hence 1919 = 2. There is no mathematical solution for this puzzle. As far as I think this is the only right answer.