Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Most Important Selected Qs for JEE AdvancedMathematicsPermutation and Combination

Paragraph: Consider the following set of points in the x-y plane A= (a, b) a, b I and |a|+|b| 2 . Question: The number of straight line which pass through at least 2 points in A , is:

Options

  1. A20
  2. B22
  3. C32
  4. D40

Correct answer

D. 40

Step-by-step solution

(i) Number of lines = ¹³ C₂- ^3 C₂ 10-2 ^5 C₂+12=40 (ii) ¹³ C₃-10- ^5 C₃ 2=256

Practice Permutation and Combination on Quantrex Academy →

More from Permutation and Combination

All Permutation and Combination questions Full Permutation and Combination list All Most Important Selected Qs for JEE Advanced PYQs