Hi,This is a question in the basic of computer secience

Question

I tried to slove it but I need some help the question about desion tree the question is :
What is a single question that you could ask of both groups of two in order to identify any single face?

Do they have long hair?
Do they have blue hair?
Are they wearing pink glasses?
None of these will work.
Why the answer is None of these will work.
Sorry if if I seem Stupid or if I
bothered you
Thanks

Answer 1

If I understand correctly, they wanted a logical question for which you would get enough information to discern one person from the other, given any two of them.

All provided questions refer to any of the two people (at least one of them having the desired feature would make their answer "yes"), so their answers will not help you distinguish one from the other.