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[" (A) "(0,pi)],[" 26.Let "cos^(-1)(x)+c...

[" (A) "(0,pi)],[" 26.Let "cos^(-1)(x)+cos^(-1)(2x)+cos^(-1)(3x)=pi." If "x" satisfies the cubic "ax^(3)+bx^(2)+cx-1=0," then "(a+b+c)],[" has the value equal to- "],[[" (A) "24," (B) "25],[" 27.If "f(x)=nx+c" and "f(B)25," (C) "26]]

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