[tex]|\Omega|=5^2=25[/tex]
a)
[tex]A=\{11,22,33,44,55\}\\|A|=5\\\\P(A)=\dfrac{5}{25}=\dfrac{1}{5}[/tex]
b)
[tex]|A|=5\cdot3=15\\\\P(A)=\dfrac{15}{25}=\dfrac{3}{5}[/tex]
c)
[tex]A=\{34,35,43,44,45,53,54,55\}\\|A|=8\\\\P(A)=\dfrac{8}{25}[/tex]
d)
[tex]|A|=\underbrace{2\cdot3}_{\text{PN}}+\underbrace{3\cdot2}_{\text{NP}}+\underbrace{2\cdot2}_{\text{PP}}=6+6+4=16\\\\P(A)=\dfrac{16}{25}[/tex]