This time it's going to be CS riddle for the very new students or even school classes. It's very short and no much to write about, but once upon a time I didn't know the answer. So here we go: I give you a range of numbers (from 12 to 120) and I think about one of them (my age). You should guess it by asking me questions while I'm answering with YES and NO only. How would you do it (guess the number via comments) asking me the minimal number of questions?
The rule still applies.