If XXX is a continuous random variable with PDF f(x)=2xf(x) = 2xf(x)=2x on [0,1][0, 1][0,1], what is P(X<0.5)P(X < 0.5)P(X<0.5)?
0.250.250.25
0.50.50.5
0.750.750.75
111