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How many straight lines can be drawn from 15 non collinear points?


A) 105

B) 120

C) 110

D) 115

Correct Answer:
A) 105

Description for Correct answer:
Required number of lines

= \( nC_2 = 15C_2 = \frac{15 X 14}{2} = 105 \)

Part of solved Permutation and combination questions and answers : >> Aptitude >> Permutation and combination




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