1.

There are 12 points in a plane of which 5 are collinear. Except these five points no three are collinear, thenA. The number of quadrilaterals one can form using these points is 420B. the number of Deltas one can form using these points is 210C. the number of lines one can form using these points is 57D. the number of lines one can form using these points is 56

Answer» Correct Answer - A::B::C
(A) .^(12)C_(4)-(` .^(5)C_(4)+^(5)C_(3).^(7)C_(1))=495-(5+70)=420`
(B). .^(12)C_(3)-(` .^(5)C_(3))=220-10=210`
(C). .^(12)C_(2)-(` .^(5)C_(2))+1=66-10+1=57`


Discussion

No Comment Found

Related InterviewSolutions