Did you get it right?
This picture shows an old schoolroom with desks, a chalkboard, and a teacher. One item does not belong.

The Answer
The correct answer is: The tablet computer on the student desk does not belong in the old schoolroom..
Here is why
- The chalkboard, desks, books, and classroom style are old-fashioned.
- The tablet is a modern object and breaks the time period.
Why people miss it
The classroom is busy enough that the modern tablet can be missed if you only look at the teacher and chalkboard.
What answer did you get before checking?