If $x, y, z$ are in A.P., then $2 y =$

x + z

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x - z

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\sqrt{x y}

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x z

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Solution

The correct option is C $x + z$
Given, $x, y, z$ are in A.P.

Hence, $y$ will be the arithmetic mean of $x$ and $z$ .

So, $y = \frac{x + z}{2}$

$\Rightarrow 2 y = x + z$

Hence, option A is correct.

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