UPSC CDS 2 2023 Math Paper

Question : 94 of 100

Marks: +1, -0

Question: Are x, y, z equal, where x, y, z are real numbers?
Statement-I: x2 + y2 + z2 - xy - yz - zx = 0
Statement-II: x3 + y3 + z3 - 3xyz = 0

if the question can be answered by using one of the statements alone, but cannot be answered using the other statement alone.
if the question can be answered by using either statement alone.
if the question can be answered by using both the statements together, but cannot be answered using either statement alone.
if the question cannot be answered even by using both the statements together.

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