UPSC CDS II 2025 Mathematics Paper

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Question : 40 of 100
 
Marks: +1, -0
What is ‌
‌
x
x−y
+
y
y−z
+
z
z−x
x+y
x−y
+‌
y+z
y−z
+‌
z+x
z−x
+3
 equal to?
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