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[" 6."E" is the midpoint of diagonal "BD...

[" 6."E" is the midpoint of diagonal "BD" of a parallelogram "],[" ABCD.If the point "E" is joined to a point "F" on DA such "],[" that "DF=(1)/(3)DA," then the ratio of the area of "/_DEF" to the "],[" area of quadriateral ABEF is : "quad " (NTSE Stage-II/2010) "],[" (A) "1:3],[" (B) "1:4],[" (C) "1:5],[" (D) "2:5]

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