There are 10 straight lines in a plane, such that no 3 are concurrent and no 2 are parallel to e...

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There are 10 straight lines in a plane, such that no 3 are concurrent and no 2 are parallel to each other. If points of intersection of above lines are joined, then maximum number of lines thus formed are (including old lines) -
(A) 610
(B) 620
(C) 630
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