Question 945363
Let's first assume that {{{y>=2}}}.
Look at the possible outcome pairs.
RP RR
PP PR
So then,
a){{{P=2/4=1/2}}}
b) {{{P=2/4=1/2}}}
.
.
.
If {{{y=1}}}, then the only outcome is
PR
So then,
a) {{{P=1}}}
b) {{{P=0}}}