Permutations And Combinations Question 76
Question: There are n points in a plane of which p points are collinear. How many lines can be formed from these points [Karnataka CET 2002]
Options:
A) $ ^{(n-p)}C_2 $
B) $ ^{n}C_2-{{}^{p}}C_2 $
C) $ ^{n}C_2-{{}^{p}}C_2+1 $
D) $ ^{n}C_2-{{}^{p}}C_2-1 $
Correct Answer: C
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Answer:
Solution:
BETA
