human
Interpret what the numbers in each region of a double Venn diagram mean All the students in a class were asked if they have a brother, sister, both or none.

The Venn Diagram shows the results. ![A Venn diagram with two sets, one labelled Brother and one labelled Sister. The number 11 is written in Brother without the intersection , number 7 is in Sister without the intersection, the number 4 is in the intersection of Brother and Sister. The number 6 is outside the circles.]() How many students are in the class? \( 4 \)
gpt
Confuses the number of regions in a Venn diagram as the total number of entries in the diagram