UPSC 2013 CDS 2 Math Paper

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Question : 19 of 100

Marks: +1, -0

x(y2−z2)+y(z2−x2)+z(x2−y2) is divisible by

[2013 CDS-II]

(y – z) only
(z – x) only
both (y – z) and (z – x)
neither (y – z) nor (z – x)

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