This is another "You can ask only one question" puzzle. This is an edited very restricted version
There may be multiple answers but I could come up with only one.
There are three persons in three seperate rooms. They have no idea about each other what-so-ever. They do not know that other persons are there in other rooms either.
Two have disabilities: One blind and the other is mute (can hear but unfortunately can't talk). They do not know each other. From their physical appearance you cannot know of their disabilities. The third one has no disability. There is no color blindness among the two either.
You need to ask one question verbally to all three going in the three rooms. Same exact question needs to be repeated in all three rooms in same exact way. YOU CANNOT MENTION ANY DISABILITY IN THE QUESTION.
They will answer only by raising their hands. Right hand for YES, Left hand for NO. If they cannot answer they are instructed to stay silent. They will be truthful.
After their answer you need to pin point who is blind and who is mute and the remaining.
State any assumption you have for your answer. The question needs to be objective so the three can only have those 3 answers. Question like "Do you think I am fat?" can be considered very subjective.
I do understand that there could be multiple answers but I hope the moderators don't consider this an open ended question.