If are four coplanar points on the sides of a skew quadrilateral

MATHEMATICS · Single correct · ISC · Mathematics · Coordinate Geometry · Vector Algebra

Problem

If

P, Q, R, S

are four coplanar points on the sides

AB, BC, CD, DA

of a skew quadrilateral, then

\frac{AP}{PB} \cdot \frac{BQ}{QC} \cdot \frac{CR}{RD} \cdot \frac{DS}{SA}

equals (1) 1 (2) -1 (3) 3 (4) -3

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