defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Determinants

If lines ax + by + c = 0, bx + cy + a = 0 and cx + ay + b = 0 are concurrent then

1
a3 + b3 + c3 + 3abc - 0
2
a3 + b3 + c3 = 3abc
3
a3 + b3 + c3 = abc
4
None of these
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