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If α and β be the roots of the equation x 2 – 2x + 2 = 0, then the least value of n for which n ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ β α = 1 is -

1. 3
2. 5
3. 4
4. 2

Correct answer: 4

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