10)
x≤2 deci x={1,2}
1<y<5 deci y={2,3,4}
x/y={1/2,1/3, 1/4, 2/2,2/3,2/4}
a) reductibila probabilitate 2/6=1/3
b) ireductibila probabilitate 4/6=2/3
11)
2<a<6 deci a={3,4,5}
3<b≤7 deci b={4,5,6,7}
a/b={3/4,3/5,3/6,3/7,4/4,4/5,4/6,4/7,5/4,5/5,5/6,5/7}
a) supraunitara probabilitate 1/12
b) echiunitara probabilitate 2/12=1/6
c) subunitara probabilitate 10/12=5/6
