UPSC NDA I 2017 Mathematics Solved Paper

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Question : 98 of 120

Marks: +1, -0

ABCD is a quadrilateral whose diagonals are AC and BD. Which one of the following is correct?

[NDA I 2017]

→
BA
+
→
CD
=
→
AC
+
→
DB
→
BA
+
→
CD
=
→
BD
+
→
CA
→
BA
+
→
CD
=
→
AC
+
→
BD
→
BA
+
→
CD
=
→
BC
+
→
AD

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