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How many circles pass through the collinear points (1, 2), (2, 4) and (3, 6)?
ANo circle at all
BExactly one circle
CExactly two circles
DInfinitely many circles
Answer & Solution
Correct answer: A. No circle at all
A unique circle exists only for non-collinear points, and these three lie on y = 2x.
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