AP EAMCET202124 Aug 2021Evening ShiftMathematicsPermutation and CombinationActual
There are 10 points on the line A B excluding A and B and 8 points on A C excluding A and C . Number of triangles formed with these points not considering A, B and C is
Options
- A¹⁸ C₃- ¹⁰ C₃
- B360
- C640
- D280
Correct answer
C. 640
Step-by-step solution
There are 10 point on A B and 8 point on A C . Total number of triangle formed is aligned & ¹⁸ C₃- ¹⁰ C₃- ^8 C₃ & =816-120-56=640 aligned