And as this app called What's My IQ continues to give us ridiculously clever questions, players like us are starting to lose hair and nails. It's a good thing that there are nice people on the youtubes who shares video walkthroughs of challenging stuff like this.
You go check out their channels, they are very helpful or you can just watch
What's My IQ Answers/Cheats for levels 11 - 20 here (for answers to levels
1 to 10 go here).