Random Algebra

Given functions
f(a,b) = random(a) < random(b)
and
g(a,b) = a < random(a+b)

which if of them is more likely to result into 1, if random(n) returns arbitrary number in range of [0;n)?

Justify your answer.

/prog/ is now officially proven to be full of inborn retards incapable of solving even elementary school problems, with exception of maybe one or two visitors. No wonder you vote Trump.