CUET PG 2024 Mathematics PYQ — There are 15 points in a plane such that 5 points are collinear a… | Mathem Solvex | Mathem Solvex
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CUET PG 2024 — Mathematics PYQ
CUET PG | Mathematics | 2024
There are 15 points in a plane such that 5 points are collinear and no three of the remaining points are collinear then total number of straight lines formed are:
Choose the correct answer:
A.
105
B.
95
C.
96
(Correct Answer)
D.
106
Correct Answer:
96
Explanation
.Total point = 15 Collections = 5 No. of st line formed 15C2−5C2+1 2!13!15!−2!3!5!4!3!+1 2!×13!15!×14!×13!−2!×3!5!×4!×3!+1 = 105 - 10 + 1 = 96
Explanation
.Total point = 15 Collections = 5 No. of st line formed 15C2−5C2+1 2!13!15!−2!3!5!4!3!+1 2!×13!15!×14!×13!−2!×3!5!×4!×3!+1 = 105 - 10 + 1 = 96
