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[" If for a positive integer "n" ,the quadratic equation,"x(x+1)+(x+1)(x+2)+...(x+n-1)(x+n)],[=10n" has two consecutive integral solutions,then "n" is equal to: "],[[" (1) "12," (2) "9],[" (3) "10," (4) "11],[" The sum of all real values of "x" satisfying the equation "],[(x^(2)-5x+5)^(x^(2)-4x-80)=1," is "]]

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