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If the equations x 2 + 2x + 3 = 0 and ax 2 + bx + c = 0, a, b, c ∈ R, have a common root, then a : b : c is -

1. 1 : 3 : 2
2. 3 : 1 : 2
3. 1 : 2 : 3
4. 3 : 2 : 1

Correct answer: 1 : 2 : 3

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