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[" 83.In a triangle "ABC" ,coordinates o...

[" 83.In a triangle "ABC" ,coordinates of "A" are "(1,2)" and the "],[" equations of the medians through "B" and "C" are respectively,"],[x+y=5" and "x=4" .Then area of "Delta ABC" (in sq.units) is "],[[" (a) "12," (b) "9," (c) "4," (d) "5]]

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