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If 20 lines are drawn in a plane such that no two of them are parallel and no three are concurrent, in how many points will they intersect each other?
Answers (1)
If no two lines are parallel, all lines are intersecting, and no three lines are concurrent.
Two straight lines create one point of intersection
Number of points of intersection = Number of combinations of 20 straight lines taken two at a time
View full answer
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