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Solve the question Using either Statement A or B

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Q.)Consider integers x , y and z. what is the min. possible value of ${x}^{2}+{y}^{2}+{z}^{2}$
A: x + y + z=89
B:Among x , y , z two are equal.
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From A: for x=30 , y=30 and z=29, the value of ${x}^{2}+{y}^{2}+{z}^{2}$ would be minimum.
A alone is sufficient to solve.

From B: Nothing can be said from B statement.