(Q). How many straight lines can be drawn through 10 points, exactly 3 of which are collinear?
Solution:-
Number of straight lines
= ¹⁰C₂ – ³C₂ + 1
= 45 – 3 + 1
= 43 Answer
(Q). How many straight lines can be drawn through 10 points, exactly 3 of which are collinear?
Solution:-
Number of straight lines
= ¹⁰C₂ – ³C₂ + 1
= 45 – 3 + 1
= 43 Answer