ANSWER
[tex]P=\frac{3}{10}=0.3[/tex]EXPLANATION
We want to find the probability that the number selected will be a prime number.
Between 11 and 30, there are 6 prime numbers:
[tex]11,13,17,19,23,29[/tex]The probability that the card selected is one with a prime number is the number of prime numbers divided by the total number (20).
Therefore, we have:
[tex]\begin{gathered} P=\frac{6}{20} \\ \Rightarrow P=\frac{3}{10}=0.3 \end{gathered}[/tex]That is the answer.
