Seven points lie on the circumference of a circle. What is the positive difference between the number of triangles and the number of quadrilaterals that can be created by connecting these points?  Choose the correct choice: A) 4 B) 5 C) 6 D) 0 E) 20
Number of triangles can be formed out of 6 points= 7C3=35   Number of quadrilaterals can be formed out of 6 points= 7C4=35   35-35= 
<gadget id="calculator">35-35</gadget>
<output>0</output>
0.   Answer=0
<result>D</result>
Seven points lie on the circumference of a circle. What is the positive difference between the number of triangles and the number of quadrilaterals that can be created by connecting these points?