ANSWER
[tex]0[/tex]EXPLANATION
We want to find the probability that the spinner will land on a red slice.
There are 10 equally sized slices, 3 blue and 7 yellow.
Since there are no red slices, the probability that the dial stops on a red slice is:
[tex]\begin{gathered} P(red)=\frac{0}{10} \\ P(red)=0 \end{gathered}[/tex]That is the answer.