Indian Institute of Foreign Trade 2012 Solved Paper

The number of quadrilaterals that can be made using any 4 points out of total 8 points on the given circle ${=}^8{\mathit{C}}_4=70$
The number of triangle that can be made using any 4 points out of total 8 points on the given circle ${=}^8{\mathit{C}}_3=56$
Thus, the required difference $=70-56=14$
Hence, option B is the correct answer.