A continuous random variable XXX has PDF f(x)=2xf(x) = 2xf(x)=2x for 0≤x≤10 \leq x \leq 10≤x≤1. Calculate P(X>0.5∣X>0.25)P(X > 0.5 | X > 0.25)P(X>0.5∣X>0.25).
34\frac{3}{4}43
1516\frac{15}{16}1615
915\frac{9}{15}159
12\frac{1}{2}21