In the following diagram, the triangle represents doctors, the circle represents players and the rectangle represents singers.

Which region represents doctors who are singers but not players?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → D
Doctors who are singers but not players must be inside the triangle and the rectangle, and outside the circle.

Region D is the part of the triangle inside the rectangle that lies outside the circle. Region C is in the triangle and the rectangle too, but it lies inside the circle, so its people are players as well.