Suppose that E and F are two events P(E and F)=0.1 and P(E)=0.4 what is P(F/E)?

Answer 1

Is it
(a) P(F/E),
(b) P(F\E), or
(c) P(F|E)?

If it is (c), conditional probability,
then
P(F|E)=0.1/0.4=0.25
(a similar question was answered before)

Answer 2

g