NDA Math Conic Section

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Question : 27 of 34
 
Marks: +1, -0
Consider any point P on the ellipse
x2
25
+
y2
9
=1
in the first quadrant.Let r and s represent its distances from (4,0) and (−4,0) respectively,then (r+s) is equal to
[NDA II 2015]
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