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If x=\log{}_cb +\log{}_bc, y=\log{}_ac +log{}_ca and z=\log{}_ba +\log{}_ab, then x^2 +y^2 +z^2 is equal to (A) 1 (B) 2 (C) xyz (D) xyz +4

Answer» If x=\log{}_cb +\log{}_bc, y=\log{}_ac +log{}_ca and z=\log{}_ba +\log{}_ab, then x^2 +y^2 +z^2 is equal to (A) 1 (B) 2 (C) xyz (D) xyz +4


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