MathematicsMedium75×since 2002Q5006If the probability that the random variable X\mathrm{X}X takes values xxx is given by P(X=x)=k(x+1)3−x,x=0,1,2,3,…\mathrm{P}(\mathrm{X}=x)=\mathrm{k}(x+1) 3^{-x}, x=0,1,2,3, \ldotsP(X=x)=k(x+1)3−x,x=0,1,2,3,…, where k\mathrm{k}k is a constant, then P(X≥2)\mathrm{P}(\mathrm{X} \geq 2)P(X≥2) is equal to :A718\frac{7}{18}187B2027\frac{20}{27}2720C727\frac{7}{27}277D1118\frac{11}{18}1811Check answerSkip