We have that the probability per side is 1/20
we have that the numbers are 5 or below 5 so it can be 5,4,3,2,1
[tex]P=\frac{1}{20}+\frac{1}{20}+\frac{1}{20}+\frac{1}{20}+\frac{1}{20}[/tex]then we sum
[tex]P=\frac{5}{20}=\frac{1}{4}[/tex]the probability is 1/4
