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If x, y, z are real numbers such that x ...

If x, y, z are real numbers such that x + y + z = 4 and `x^(2)` + `y^(2)` + `z^(2)` = 6, then x , y , z lie in: Options
[`frac{3}{2}`, 2]
[`frac{2}{3}`, 2]
[0, `frac{2}{3}` ]
[0, `frac{3}{2}` ]

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