RRB NTPC CBT I 30 Dec 2020 Shift 1 Paper

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Question : 36 of 100

Marks: +1, -0

(x - y)³ + (y - z)³ + (z - x)³ = ?

3xyz
3(x - y)(y - z)(z - x)
(x + y + z)(x² + y² + z²)
(x - y)(y - z)(z - x)

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