Following are some questions posed by the teacher in the mathematics classroom:
A. What is the area of the rectangle whose one side is 5 cm and perimeter is 30 cm?
B. Find a set of numbers whose median is 4.
C. List all prime numbers between 0 - 8.
D. Tell me anything mathematical information you know about rectangles.
1. A, B and C are closed ended and D is open ended question.
2. A is closed ended and B, C and D are open ended questions.
3. A and C are closed ended and B and D are open ended questions
4. A and B are closed ended questions and C and D are open ended questions.