A continuous random variable XXX has PDF f(x)=kf(x) = kf(x)=k for x∈[0,5]x \in [0, 5]x∈[0,5]. What is P(1≤X≤2)P(1 \le X \le 2)P(1≤X≤2)?
0.20.20.2
0.10.10.1
0.50.50.5
0.250.250.25