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Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
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Permutation and Combination
How many straight lines can be drawn from 15 non-collinear points?
105
120
110
115
Show Answer
Correct Answer:
105
Explanation:
Required number of lines =
n
C
2
=
15
C
2
= (15 x 14)/2
= 105
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