there is an article written:
" if p is equally likely to take any value in [0,1], then P(0.1<p<0.5)=0.4
why between 0.1 and 0.5 ? and why the ans is 0.4?

there is an article written:
" if p is equally likely to take any value in [0,1], then P(0.1<p<0.5)=0.4
why between 0.1 and 0.5 ? and why the ans is 0.4?