The number of vowels is:
[tex]2[/tex]
The total number of tiles is:
[tex]10[/tex]
Therefore, the total number of letters not vowels is given by:
[tex]10-2=8[/tex]
Hence, the probability of picking a letter that is not a vowel:
[tex]\frac{8}{10}=\frac{4}{5}[/tex]
Therefore the required probability is 4/5
