Q. If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?
A) 3
B) 2
C) 1
D) 4
✔ Correct Answer: 1
Exam Insight
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A) 3
B) 2
C) 1
D) 4
✔ Correct Answer: 1
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